(function() { var goog = goog || {};
goog.global = this;
goog.DEBUG = true;
goog.LOCALE = "en";
goog.evalWorksForGlobals_ = null;
goog.provide = function(name) {
  goog.exportPath_(name)
};
goog.setTestOnly = function(opt_message) {
  if(!goog.DEBUG) {
    opt_message = opt_message || "";
    throw Error("Importing test-only code into non-debug environment" + opt_message ? ": " + opt_message : ".");
  }
};
goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) {
  var parts = name.split("."), cur = opt_objectToExportTo || goog.global;
  !(parts[0] in cur) && cur.execScript && cur.execScript("var " + parts[0]);
  for(var part;parts.length && (part = parts.shift());) {
    if(!parts.length && goog.isDef(opt_object)) {
      cur[part] = opt_object
    }else {
      cur = cur[part] ? cur[part] : cur[part] = {}
    }
  }
};
goog.getObjectByName = function(name, opt_obj) {
  for(var parts = name.split("."), cur = opt_obj || goog.global, part;part = parts.shift();) {
    if(cur[part]) {
      cur = cur[part]
    }else {
      return null
    }
  }
  return cur
};
goog.globalize = function(obj, opt_global) {
  var global = opt_global || goog.global, x;
  for(x in obj) {
    global[x] = obj[x]
  }
};
goog.addDependency = function() {
};
goog.useStrictRequires = false;
goog.require = function() {
};
goog.basePath = "";
goog.nullFunction = function() {
};
goog.identityFunction = function() {
  return arguments[0]
};
goog.abstractMethod = function() {
  throw Error("unimplemented abstract method");
};
goog.addSingletonGetter = function(ctor) {
  ctor.getInstance = function() {
    return ctor.instance_ || (ctor.instance_ = new ctor)
  }
};
goog.typeOf = function(value) {
  var s = typeof value;
  if(s == "object") {
    if(value) {
      if(value instanceof Array || !(value instanceof Object) && Object.prototype.toString.call(value) == "[object Array]" || typeof value.length == "number" && typeof value.splice != "undefined" && typeof value.propertyIsEnumerable != "undefined" && !value.propertyIsEnumerable("splice")) {
        return"array"
      }
      if(!(value instanceof Object) && (Object.prototype.toString.call(value) == "[object Function]" || typeof value.call != "undefined" && typeof value.propertyIsEnumerable != "undefined" && !value.propertyIsEnumerable("call"))) {
        return"function"
      }
    }else {
      return"null"
    }
  }else {
    if(s == "function" && typeof value.call == "undefined") {
      return"object"
    }
  }
  return s
};
goog.propertyIsEnumerableCustom_ = function(object, propName) {
  if(propName in object) {
    for(var key in object) {
      if(key == propName && Object.prototype.hasOwnProperty.call(object, propName)) {
        return true
      }
    }
  }
  return false
};
goog.propertyIsEnumerable_ = function(object, propName) {
  return object instanceof Object ? Object.prototype.propertyIsEnumerable.call(object, propName) : goog.propertyIsEnumerableCustom_(object, propName)
};
goog.isDef = function(val) {
  return val !== undefined
};
goog.isNull = function(val) {
  return val === null
};
goog.isDefAndNotNull = function(val) {
  return val != null
};
goog.isArray = function(val) {
  return goog.typeOf(val) == "array"
};
goog.isArrayLike = function(val) {
  var type = goog.typeOf(val);
  return type == "array" || type == "object" && typeof val.length == "number"
};
goog.isDateLike = function(val) {
  return goog.isObject(val) && typeof val.getFullYear == "function"
};
goog.isString = function(val) {
  return typeof val == "string"
};
goog.isBoolean = function(val) {
  return typeof val == "boolean"
};
goog.isNumber = function(val) {
  return typeof val == "number"
};
goog.isFunction = function(val) {
  return goog.typeOf(val) == "function"
};
goog.isObject = function(val) {
  var type = goog.typeOf(val);
  return type == "object" || type == "array" || type == "function"
};
goog.getUid = function(obj) {
  return obj[goog.UID_PROPERTY_] || (obj[goog.UID_PROPERTY_] = ++goog.uidCounter_)
};
goog.removeUid = function(obj) {
  "removeAttribute" in obj && obj.removeAttribute(goog.UID_PROPERTY_);
  try {
    delete obj[goog.UID_PROPERTY_]
  }catch(ex) {
  }
};
goog.UID_PROPERTY_ = "closure_uid_" + Math.floor(Math.random() * 2147483648).toString(36);
goog.uidCounter_ = 0;
goog.getHashCode = goog.getUid;
goog.removeHashCode = goog.removeUid;
goog.cloneObject = function(obj) {
  var type = goog.typeOf(obj);
  if(type == "object" || type == "array") {
    if(obj.clone) {
      return obj.clone()
    }
    var clone = type == "array" ? [] : {}, key;
    for(key in obj) {
      clone[key] = goog.cloneObject(obj[key])
    }
    return clone
  }
  return obj
};
goog.bind = function(fn, selfObj) {
  var context = selfObj || goog.global;
  if(arguments.length > 2) {
    var boundArgs = Array.prototype.slice.call(arguments, 2);
    return function() {
      var newArgs = Array.prototype.slice.call(arguments);
      Array.prototype.unshift.apply(newArgs, boundArgs);
      return fn.apply(context, newArgs)
    }
  }else {
    return function() {
      return fn.apply(context, arguments)
    }
  }
};
goog.partial = function(fn) {
  var args = Array.prototype.slice.call(arguments, 1);
  return function() {
    var newArgs = Array.prototype.slice.call(arguments);
    newArgs.unshift.apply(newArgs, args);
    return fn.apply(this, newArgs)
  }
};
goog.mixin = function(target, source) {
  for(var x in source) {
    target[x] = source[x]
  }
};
goog.now = Date.now || function() {
  return+new Date
};
goog.globalEval = function(script) {
  if(goog.global.execScript) {
    goog.global.execScript(script, "JavaScript")
  }else {
    if(goog.global.eval) {
      if(goog.evalWorksForGlobals_ == null) {
        goog.global.eval("var _et_ = 1;");
        if(typeof goog.global._et_ != "undefined") {
          delete goog.global._et_;
          goog.evalWorksForGlobals_ = true
        }else {
          goog.evalWorksForGlobals_ = false
        }
      }
      if(goog.evalWorksForGlobals_) {
        goog.global.eval(script)
      }else {
        var doc = goog.global.document, scriptElt = doc.createElement("script");
        scriptElt.type = "text/javascript";
        scriptElt.defer = false;
        scriptElt.appendChild(doc.createTextNode(script));
        doc.body.appendChild(scriptElt);
        doc.body.removeChild(scriptElt)
      }
    }else {
      throw Error("goog.globalEval not available");
    }
  }
};
goog.typedef = true;
goog.getCssName = function(className, opt_modifier) {
  var cssName = className + (opt_modifier ? "-" + opt_modifier : "");
  return goog.cssNameMapping_ && cssName in goog.cssNameMapping_ ? goog.cssNameMapping_[cssName] : cssName
};
goog.setCssNameMapping = function(mapping) {
  goog.cssNameMapping_ = mapping
};
goog.getMsg = function(str, opt_values) {
  var values = opt_values || {}, key;
  for(key in values) {
    var value = ("" + values[key]).replace(/\$/g, "$$$$");
    str = str.replace(RegExp("\\{\\$" + key + "\\}", "gi"), value)
  }
  return str
};
goog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {
  goog.exportPath_(publicPath, object, opt_objectToExportTo)
};
goog.exportProperty = function(object, publicName, symbol) {
  object[publicName] = symbol
};
goog.inherits = function(childCtor, parentCtor) {
  function tempCtor() {
  }
  tempCtor.prototype = parentCtor.prototype;
  childCtor.superClass_ = parentCtor.prototype;
  childCtor.prototype = new tempCtor;
  childCtor.prototype.constructor = childCtor
};
goog.base = function(me, opt_methodName) {
  var caller = arguments.callee.caller;
  if(caller.superClass_) {
    return caller.superClass_.constructor.apply(me, Array.prototype.slice.call(arguments, 1))
  }
  for(var args = Array.prototype.slice.call(arguments, 2), foundCaller = false, ctor = me.constructor;ctor;ctor = ctor.superClass_ && ctor.superClass_.constructor) {
    if(ctor.prototype[opt_methodName] === caller) {
      foundCaller = true
    }else {
      if(foundCaller) {
        return ctor.prototype[opt_methodName].apply(me, args)
      }
    }
  }
  if(me[opt_methodName] === caller) {
    return me.constructor.prototype[opt_methodName].apply(me, args)
  }else {
    throw Error("goog.base called from a method of one name to a method of a different name");
  }
};
goog.scope = function(fn) {
  fn.call(goog.global)
};
goog.MODIFY_FUNCTION_PROTOTYPES = true;
if(goog.MODIFY_FUNCTION_PROTOTYPES) {
  Function.prototype.bind = function(selfObj) {
    if(arguments.length > 1) {
      var args = Array.prototype.slice.call(arguments, 1);
      args.unshift(this, selfObj);
      return goog.bind.apply(null, args)
    }else {
      return goog.bind(this, selfObj)
    }
  };
  Function.prototype.partial = function() {
    var args = Array.prototype.slice.call(arguments);
    args.unshift(this, null);
    return goog.bind.apply(null, args)
  };
  Function.prototype.inherits = function(parentCtor) {
    goog.inherits(this, parentCtor)
  };
  Function.prototype.mixin = function(source) {
    goog.mixin(this.prototype, source)
  }
}
;goog.debug = {};
goog.debug.Error = function(opt_msg) {
  this.stack = Error().stack || "";
  if(opt_msg) {
    this.message = String(opt_msg)
  }
};
goog.inherits(goog.debug.Error, Error);
goog.debug.Error.prototype.name = "CustomError";goog.string = {};
goog.string.Unicode = {NBSP:"\u00a0"};
goog.string.startsWith = function(str, prefix) {
  return str.lastIndexOf(prefix, 0) == 0
};
goog.string.endsWith = function(str, suffix) {
  var l = str.length - suffix.length;
  return l >= 0 && str.indexOf(suffix, l) == l
};
goog.string.caseInsensitiveStartsWith = function(str, prefix) {
  return goog.string.caseInsensitiveCompare(prefix, str.substr(0, prefix.length)) == 0
};
goog.string.caseInsensitiveEndsWith = function(str, suffix) {
  return goog.string.caseInsensitiveCompare(suffix, str.substr(str.length - suffix.length, suffix.length)) == 0
};
goog.string.subs = function(str) {
  for(var i = 1;i < arguments.length;i++) {
    var replacement = String(arguments[i]).replace(/\$/g, "$$$$");
    str = str.replace(/\%s/, replacement)
  }
  return str
};
goog.string.collapseWhitespace = function(str) {
  return str.replace(/[\s\xa0]+/g, " ").replace(/^\s+|\s+$/g, "")
};
goog.string.isEmpty = function(str) {
  return/^[\s\xa0]*$/.test(str)
};
goog.string.isEmptySafe = function(str) {
  return goog.string.isEmpty(goog.string.makeSafe(str))
};
goog.string.isBreakingWhitespace = function(str) {
  return!/[^\t\n\r ]/.test(str)
};
goog.string.isAlpha = function(str) {
  return!/[^a-zA-Z]/.test(str)
};
goog.string.isNumeric = function(str) {
  return!/[^0-9]/.test(str)
};
goog.string.isAlphaNumeric = function(str) {
  return!/[^a-zA-Z0-9]/.test(str)
};
goog.string.isSpace = function(ch) {
  return ch == " "
};
goog.string.isUnicodeChar = function(ch) {
  return ch.length == 1 && ch >= " " && ch <= "~" || ch >= "\u0080" && ch <= "\ufffd"
};
goog.string.stripNewlines = function(str) {
  return str.replace(/(\r\n|\r|\n)+/g, " ")
};
goog.string.canonicalizeNewlines = function(str) {
  return str.replace(/(\r\n|\r|\n)/g, "\n")
};
goog.string.normalizeWhitespace = function(str) {
  return str.replace(/\xa0|\s/g, " ")
};
goog.string.normalizeSpaces = function(str) {
  return str.replace(/\xa0|[ \t]+/g, " ")
};
goog.string.trim = function(str) {
  return str.replace(/^[\s\xa0]+|[\s\xa0]+$/g, "")
};
goog.string.trimLeft = function(str) {
  return str.replace(/^[\s\xa0]+/, "")
};
goog.string.trimRight = function(str) {
  return str.replace(/[\s\xa0]+$/, "")
};
goog.string.caseInsensitiveCompare = function(str1, str2) {
  var test1 = String(str1).toLowerCase(), test2 = String(str2).toLowerCase();
  return test1 < test2 ? -1 : test1 == test2 ? 0 : 1
};
goog.string.numerateCompareRegExp_ = /(\.\d+)|(\d+)|(\D+)/g;
goog.string.numerateCompare = function(str1, str2) {
  if(str1 == str2) {
    return 0
  }
  if(!str1) {
    return-1
  }
  if(!str2) {
    return 1
  }
  for(var tokens1 = str1.toLowerCase().match(goog.string.numerateCompareRegExp_), tokens2 = str2.toLowerCase().match(goog.string.numerateCompareRegExp_), count = Math.min(tokens1.length, tokens2.length), i = 0;i < count;i++) {
    var a = tokens1[i], b = tokens2[i];
    if(a != b) {
      var num1 = parseInt(a, 10);
      if(!isNaN(num1)) {
        var num2 = parseInt(b, 10);
        if(!isNaN(num2) && num1 - num2) {
          return num1 - num2
        }
      }
      return a < b ? -1 : 1
    }
  }
  if(tokens1.length != tokens2.length) {
    return tokens1.length - tokens2.length
  }
  return str1 < str2 ? -1 : 1
};
goog.string.encodeUriRegExp_ = /^[a-zA-Z0-9\-_.!~*'()]*$/;
goog.string.urlEncode = function(str) {
  str = String(str);
  if(!goog.string.encodeUriRegExp_.test(str)) {
    return encodeURIComponent(str)
  }
  return str
};
goog.string.urlDecode = function(str) {
  return decodeURIComponent(str.replace(/\+/g, " "))
};
goog.string.newLineToBr = function(str, opt_xml) {
  return str.replace(/(\r\n|\r|\n)/g, opt_xml ? "<br />" : "<br>")
};
goog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {
  if(opt_isLikelyToContainHtmlChars) {
    return str.replace(goog.string.amperRe_, "&amp;").replace(goog.string.ltRe_, "&lt;").replace(goog.string.gtRe_, "&gt;").replace(goog.string.quotRe_, "&quot;")
  }else {
    if(!goog.string.allRe_.test(str)) {
      return str
    }
    if(str.indexOf("&") != -1) {
      str = str.replace(goog.string.amperRe_, "&amp;")
    }
    if(str.indexOf("<") != -1) {
      str = str.replace(goog.string.ltRe_, "&lt;")
    }
    if(str.indexOf(">") != -1) {
      str = str.replace(goog.string.gtRe_, "&gt;")
    }
    if(str.indexOf('"') != -1) {
      str = str.replace(goog.string.quotRe_, "&quot;")
    }
    return str
  }
};
goog.string.amperRe_ = /&/g;
goog.string.ltRe_ = /</g;
goog.string.gtRe_ = />/g;
goog.string.quotRe_ = /\"/g;
goog.string.allRe_ = /[&<>\"]/;
goog.string.unescapeEntities = function(str) {
  if(goog.string.contains(str, "&")) {
    return"document" in goog.global && !goog.string.contains(str, "<") ? goog.string.unescapeEntitiesUsingDom_(str) : goog.string.unescapePureXmlEntities_(str)
  }
  return str
};
goog.string.unescapeEntitiesUsingDom_ = function(str) {
  var el = goog.global.document.createElement("div");
  el.innerHTML = "<pre>x" + str + "</pre>";
  el.firstChild[goog.string.NORMALIZE_FN_] && el.firstChild[goog.string.NORMALIZE_FN_]();
  str = el.firstChild.firstChild.nodeValue.slice(1);
  el.innerHTML = "";
  return goog.string.canonicalizeNewlines(str)
};
goog.string.unescapePureXmlEntities_ = function(str) {
  return str.replace(/&([^;]+);/g, function(s, entity) {
    switch(entity) {
      case "amp":
        return"&";
      case "lt":
        return"<";
      case "gt":
        return">";
      case "quot":
        return'"';
      default:
        if(entity.charAt(0) == "#") {
          var n = Number("0" + entity.substr(1));
          if(!isNaN(n)) {
            return String.fromCharCode(n)
          }
        }
        return s
    }
  })
};
goog.string.NORMALIZE_FN_ = "normalize";
goog.string.whitespaceEscape = function(str, opt_xml) {
  return goog.string.newLineToBr(str.replace(/  /g, " &#160;"), opt_xml)
};
goog.string.stripQuotes = function(str, quoteChars) {
  for(var length = quoteChars.length, i = 0;i < length;i++) {
    var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);
    if(str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {
      return str.substring(1, str.length - 1)
    }
  }
  return str
};
goog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {
  if(opt_protectEscapedCharacters) {
    str = goog.string.unescapeEntities(str)
  }
  if(str.length > chars) {
    str = str.substring(0, chars - 3) + "..."
  }
  if(opt_protectEscapedCharacters) {
    str = goog.string.htmlEscape(str)
  }
  return str
};
goog.string.truncateMiddle = function(str, chars, opt_protectEscapedCharacters) {
  if(opt_protectEscapedCharacters) {
    str = goog.string.unescapeEntities(str)
  }
  if(str.length > chars) {
    var half = Math.floor(chars / 2), endPos = str.length - half;
    half += chars % 2;
    str = str.substring(0, half) + "..." + str.substring(endPos)
  }
  if(opt_protectEscapedCharacters) {
    str = goog.string.htmlEscape(str)
  }
  return str
};
goog.string.specialEscapeChars_ = {"\u0000":"\\0", "\u0008":"\\b", "\u000c":"\\f", "\n":"\\n", "\r":"\\r", "\t":"\\t", "\u000b":"\\x0B", '"':'\\"', "\\":"\\\\"};
goog.string.jsEscapeCache_ = {"'":"\\'"};
goog.string.quote = function(s) {
  s = String(s);
  if(s.quote) {
    return s.quote()
  }else {
    for(var sb = ['"'], i = 0;i < s.length;i++) {
      var ch = s.charAt(i), cc = ch.charCodeAt(0);
      sb[i + 1] = goog.string.specialEscapeChars_[ch] || (cc > 31 && cc < 127 ? ch : goog.string.escapeChar(ch))
    }
    sb.push('"');
    return sb.join("")
  }
};
goog.string.escapeString = function(str) {
  for(var sb = [], i = 0;i < str.length;i++) {
    sb[i] = goog.string.escapeChar(str.charAt(i))
  }
  return sb.join("")
};
goog.string.escapeChar = function(c) {
  if(c in goog.string.jsEscapeCache_) {
    return goog.string.jsEscapeCache_[c]
  }
  if(c in goog.string.specialEscapeChars_) {
    return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c]
  }
  var rv = c, cc = c.charCodeAt(0);
  if(cc > 31 && cc < 127) {
    rv = c
  }else {
    if(cc < 256) {
      rv = "\\x";
      if(cc < 16 || cc > 256) {
        rv += "0"
      }
    }else {
      rv = "\\u";
      if(cc < 4096) {
        rv += "0"
      }
    }
    rv += cc.toString(16).toUpperCase()
  }
  return goog.string.jsEscapeCache_[c] = rv
};
goog.string.toMap = function(s) {
  for(var rv = {}, i = 0;i < s.length;i++) {
    rv[s.charAt(i)] = true
  }
  return rv
};
goog.string.contains = function(s, ss) {
  return s.indexOf(ss) != -1
};
goog.string.removeAt = function(s, index, stringLength) {
  var resultStr = s;
  if(index >= 0 && index < s.length && stringLength > 0) {
    resultStr = s.substr(0, index) + s.substr(index + stringLength, s.length - index - stringLength)
  }
  return resultStr
};
goog.string.remove = function(s, ss) {
  var re = RegExp(goog.string.regExpEscape(ss), "");
  return s.replace(re, "")
};
goog.string.removeAll = function(s, ss) {
  var re = RegExp(goog.string.regExpEscape(ss), "g");
  return s.replace(re, "")
};
goog.string.regExpEscape = function(s) {
  return String(s).replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, "\\$1").replace(/\x08/g, "\\x08")
};
goog.string.repeat = function(string, length) {
  return Array(length + 1).join(string)
};
goog.string.padNumber = function(num, length, opt_precision) {
  var s = goog.isDef(opt_precision) ? num.toFixed(opt_precision) : String(num), index = s.indexOf(".");
  if(index == -1) {
    index = s.length
  }
  return goog.string.repeat("0", Math.max(0, length - index)) + s
};
goog.string.makeSafe = function(obj) {
  return obj == null ? "" : String(obj)
};
goog.string.buildString = function() {
  return Array.prototype.join.call(arguments, "")
};
goog.string.getRandomString = function() {
  return Math.floor(Math.random() * 2147483648).toString(36) + (Math.floor(Math.random() * 2147483648) ^ goog.now()).toString(36)
};
goog.string.compareVersions = function(version1, version2) {
  for(var order = 0, v1Subs = goog.string.trim(String(version1)).split("."), v2Subs = goog.string.trim(String(version2)).split("."), subCount = Math.max(v1Subs.length, v2Subs.length), subIdx = 0;order == 0 && subIdx < subCount;subIdx++) {
    var v1Sub = v1Subs[subIdx] || "", v2Sub = v2Subs[subIdx] || "", v1CompParser = RegExp("(\\d*)(\\D*)", "g"), v2CompParser = RegExp("(\\d*)(\\D*)", "g");
    do {
      var v1Comp = v1CompParser.exec(v1Sub) || ["", "", ""], v2Comp = v2CompParser.exec(v2Sub) || ["", "", ""];
      if(v1Comp[0].length == 0 && v2Comp[0].length == 0) {
        break
      }
      var v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10), v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);
      order = goog.string.compareElements_(v1CompNum, v2CompNum) || goog.string.compareElements_(v1Comp[2].length == 0, v2Comp[2].length == 0) || goog.string.compareElements_(v1Comp[2], v2Comp[2])
    }while(order == 0)
  }
  return order
};
goog.string.compareElements_ = function(left, right) {
  if(left < right) {
    return-1
  }else {
    if(left > right) {
      return 1
    }
  }
  return 0
};
goog.string.HASHCODE_MAX_ = 4294967296;
goog.string.hashCode = function(str) {
  for(var result = 0, i = 0;i < str.length;++i) {
    result = 31 * result + str.charCodeAt(i);
    result %= goog.string.HASHCODE_MAX_
  }
  return result
};
goog.string.uniqueStringCounter_ = Math.random() * 2147483648 | 0;
goog.string.createUniqueString = function() {
  return"goog_" + goog.string.uniqueStringCounter_++
};
goog.string.toNumber = function(str) {
  var num = Number(str);
  if(num == 0 && goog.string.isEmpty(str)) {
    return NaN
  }
  return num
};goog.asserts = {};
goog.asserts.ENABLE_ASSERTS = goog.DEBUG;
goog.asserts.AssertionError = function(messagePattern, messageArgs) {
  messageArgs.unshift(messagePattern);
  goog.debug.Error.call(this, goog.string.subs.apply(null, messageArgs));
  messageArgs.shift();
  this.messagePattern = messagePattern
};
goog.inherits(goog.asserts.AssertionError, goog.debug.Error);
goog.asserts.AssertionError.prototype.name = "AssertionError";
goog.asserts.doAssertFailure_ = function(defaultMessage, defaultArgs, givenMessage, givenArgs) {
  var message = "Assertion failed";
  if(givenMessage) {
    message += ": " + givenMessage;
    var args = givenArgs
  }else {
    if(defaultMessage) {
      message += ": " + defaultMessage;
      args = defaultArgs
    }
  }
  throw new goog.asserts.AssertionError("" + message, args || []);
};
goog.asserts.assert = function(condition, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !condition && goog.asserts.doAssertFailure_("", null, opt_message, Array.prototype.slice.call(arguments, 2));
  return condition
};
goog.asserts.fail = function(opt_message) {
  if(goog.asserts.ENABLE_ASSERTS) {
    throw new goog.asserts.AssertionError("Failure" + (opt_message ? ": " + opt_message : ""), Array.prototype.slice.call(arguments, 1));
  }
};
goog.asserts.assertNumber = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isNumber(value) && goog.asserts.doAssertFailure_("Expected number but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertString = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isString(value) && goog.asserts.doAssertFailure_("Expected string but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertFunction = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isFunction(value) && goog.asserts.doAssertFailure_("Expected function but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertObject = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isObject(value) && goog.asserts.doAssertFailure_("Expected object but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertArray = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isArray(value) && goog.asserts.doAssertFailure_("Expected array but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertBoolean = function(value, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !goog.isBoolean(value) && goog.asserts.doAssertFailure_("Expected boolean but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
  return value
};
goog.asserts.assertInstanceof = function(value, type, opt_message) {
  goog.asserts.ENABLE_ASSERTS && !(value instanceof type) && goog.asserts.doAssertFailure_("instanceof check failed.", null, opt_message, Array.prototype.slice.call(arguments, 3))
};goog.array = {};
goog.array.peek = function(array) {
  return array[array.length - 1]
};
goog.array.ARRAY_PROTOTYPE_ = Array.prototype;
goog.array.indexOf = goog.array.ARRAY_PROTOTYPE_.indexOf ? function(arr, obj, opt_fromIndex) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.indexOf.call(arr, obj, opt_fromIndex)
} : function(arr, obj, opt_fromIndex) {
  var fromIndex = opt_fromIndex == null ? 0 : opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) : opt_fromIndex;
  if(goog.isString(arr)) {
    if(!goog.isString(obj) || obj.length != 1) {
      return-1
    }
    return arr.indexOf(obj, fromIndex)
  }
  for(var i = fromIndex;i < arr.length;i++) {
    if(i in arr && arr[i] === obj) {
      return i
    }
  }
  return-1
};
goog.array.lastIndexOf = goog.array.ARRAY_PROTOTYPE_.lastIndexOf ? function(arr, obj, opt_fromIndex) {
  goog.asserts.assert(arr.length != null);
  var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
  return goog.array.ARRAY_PROTOTYPE_.lastIndexOf.call(arr, obj, fromIndex)
} : function(arr, obj, opt_fromIndex) {
  var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
  if(fromIndex < 0) {
    fromIndex = Math.max(0, arr.length + fromIndex)
  }
  if(goog.isString(arr)) {
    if(!goog.isString(obj) || obj.length != 1) {
      return-1
    }
    return arr.lastIndexOf(obj, fromIndex)
  }
  for(var i = fromIndex;i >= 0;i--) {
    if(i in arr && arr[i] === obj) {
      return i
    }
  }
  return-1
};
goog.array.forEach = goog.array.ARRAY_PROTOTYPE_.forEach ? function(arr, f, opt_obj) {
  goog.asserts.assert(arr.length != null);
  goog.array.ARRAY_PROTOTYPE_.forEach.call(arr, f, opt_obj)
} : function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    i in arr2 && f.call(opt_obj, arr2[i], i, arr)
  }
};
goog.array.forEachRight = function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = l - 1;i >= 0;--i) {
    i in arr2 && f.call(opt_obj, arr2[i], i, arr)
  }
};
goog.array.filter = goog.array.ARRAY_PROTOTYPE_.filter ? function(arr, f, opt_obj) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.filter.call(arr, f, opt_obj)
} : function(arr, f, opt_obj) {
  for(var l = arr.length, res = [], resLength = 0, arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    if(i in arr2) {
      var val = arr2[i];
      if(f.call(opt_obj, val, i, arr)) {
        res[resLength++] = val
      }
    }
  }
  return res
};
goog.array.map = goog.array.ARRAY_PROTOTYPE_.map ? function(arr, f, opt_obj) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.map.call(arr, f, opt_obj)
} : function(arr, f, opt_obj) {
  for(var l = arr.length, res = Array(l), arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    if(i in arr2) {
      res[i] = f.call(opt_obj, arr2[i], i, arr)
    }
  }
  return res
};
goog.array.reduce = function(arr, f, val$$0, opt_obj) {
  if(arr.reduce) {
    return opt_obj ? arr.reduce(goog.bind(f, opt_obj), val$$0) : arr.reduce(f, val$$0)
  }
  var rval = val$$0;
  goog.array.forEach(arr, function(val, index) {
    rval = f.call(opt_obj, rval, val, index, arr)
  });
  return rval
};
goog.array.reduceRight = function(arr, f, val$$0, opt_obj) {
  if(arr.reduceRight) {
    return opt_obj ? arr.reduceRight(goog.bind(f, opt_obj), val$$0) : arr.reduceRight(f, val$$0)
  }
  var rval = val$$0;
  goog.array.forEachRight(arr, function(val, index) {
    rval = f.call(opt_obj, rval, val, index, arr)
  });
  return rval
};
goog.array.some = goog.array.ARRAY_PROTOTYPE_.some ? function(arr, f, opt_obj) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.some.call(arr, f, opt_obj)
} : function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    if(i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
      return true
    }
  }
  return false
};
goog.array.every = goog.array.ARRAY_PROTOTYPE_.every ? function(arr, f, opt_obj) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.every.call(arr, f, opt_obj)
} : function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    if(i in arr2 && !f.call(opt_obj, arr2[i], i, arr)) {
      return false
    }
  }
  return true
};
goog.array.find = function(arr, f, opt_obj) {
  var i = goog.array.findIndex(arr, f, opt_obj);
  return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i]
};
goog.array.findIndex = function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = 0;i < l;i++) {
    if(i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
      return i
    }
  }
  return-1
};
goog.array.findRight = function(arr, f, opt_obj) {
  var i = goog.array.findIndexRight(arr, f, opt_obj);
  return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i]
};
goog.array.findIndexRight = function(arr, f, opt_obj) {
  for(var l = arr.length, arr2 = goog.isString(arr) ? arr.split("") : arr, i = l - 1;i >= 0;i--) {
    if(i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
      return i
    }
  }
  return-1
};
goog.array.contains = function(arr, obj) {
  return goog.array.indexOf(arr, obj) >= 0
};
goog.array.isEmpty = function(arr) {
  return arr.length == 0
};
goog.array.clear = function(arr) {
  if(!goog.isArray(arr)) {
    for(var i = arr.length - 1;i >= 0;i--) {
      delete arr[i]
    }
  }
  arr.length = 0
};
goog.array.insert = function(arr, obj) {
  goog.array.contains(arr, obj) || arr.push(obj)
};
goog.array.insertAt = function(arr, obj, opt_i) {
  goog.array.splice(arr, opt_i, 0, obj)
};
goog.array.insertArrayAt = function(arr, elementsToAdd, opt_i) {
  goog.partial(goog.array.splice, arr, opt_i, 0).apply(null, elementsToAdd)
};
goog.array.insertBefore = function(arr, obj, opt_obj2) {
  var i;
  arguments.length == 2 || (i = goog.array.indexOf(arr, opt_obj2)) < 0 ? arr.push(obj) : goog.array.insertAt(arr, obj, i)
};
goog.array.remove = function(arr, obj) {
  var i = goog.array.indexOf(arr, obj), rv;
  if(rv = i >= 0) {
    goog.array.removeAt(arr, i)
  }
  return rv
};
goog.array.removeAt = function(arr, i) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.splice.call(arr, i, 1).length == 1
};
goog.array.removeIf = function(arr, f, opt_obj) {
  var i = goog.array.findIndex(arr, f, opt_obj);
  if(i >= 0) {
    goog.array.removeAt(arr, i);
    return true
  }
  return false
};
goog.array.concat = function() {
  return goog.array.ARRAY_PROTOTYPE_.concat.apply(goog.array.ARRAY_PROTOTYPE_, arguments)
};
goog.array.clone = function(arr) {
  if(goog.isArray(arr)) {
    return goog.array.concat(arr)
  }else {
    for(var rv = [], i = 0, len = arr.length;i < len;i++) {
      rv[i] = arr[i]
    }
    return rv
  }
};
goog.array.toArray = function(object) {
  if(goog.isArray(object)) {
    return goog.array.concat(object)
  }
  return goog.array.clone(object)
};
goog.array.extend = function(arr1) {
  for(var i = 1;i < arguments.length;i++) {
    var arr2 = arguments[i], isArrayLike;
    if(goog.isArray(arr2) || (isArrayLike = goog.isArrayLike(arr2)) && arr2.hasOwnProperty("callee")) {
      arr1.push.apply(arr1, arr2)
    }else {
      if(isArrayLike) {
        for(var len1 = arr1.length, len2 = arr2.length, j = 0;j < len2;j++) {
          arr1[len1 + j] = arr2[j]
        }
      }else {
        arr1.push(arr2)
      }
    }
  }
};
goog.array.splice = function(arr) {
  goog.asserts.assert(arr.length != null);
  return goog.array.ARRAY_PROTOTYPE_.splice.apply(arr, goog.array.slice(arguments, 1))
};
goog.array.slice = function(arr, start, opt_end) {
  goog.asserts.assert(arr.length != null);
  return arguments.length <= 2 ? goog.array.ARRAY_PROTOTYPE_.slice.call(arr, start) : goog.array.ARRAY_PROTOTYPE_.slice.call(arr, start, opt_end)
};
goog.array.removeDuplicates = function(arr, opt_rv) {
  for(var rv = opt_rv || arr, seen = {}, cursorInsert = 0, cursorRead = 0;cursorRead < arr.length;) {
    var current = arr[cursorRead++], uid = goog.isObject(current) ? goog.getUid(current) : current;
    if(!Object.prototype.hasOwnProperty.call(seen, uid)) {
      seen[uid] = true;
      rv[cursorInsert++] = current
    }
  }
  rv.length = cursorInsert
};
goog.array.binarySearch = function(arr, target, opt_compareFn) {
  return goog.array.binarySearch_(arr, opt_compareFn || goog.array.defaultCompare, false, target)
};
goog.array.binarySelect = function(arr, evaluator, opt_obj) {
  return goog.array.binarySearch_(arr, evaluator, true, undefined, opt_obj)
};
goog.array.binarySearch_ = function(arr, compareFn, isEvaluator, opt_target, opt_selfObj) {
  for(var left = 0, right = arr.length, found;left < right;) {
    var middle = left + right >> 1, compareResult;
    compareResult = isEvaluator ? compareFn.call(opt_selfObj, arr[middle], middle, arr) : compareFn(opt_target, arr[middle]);
    if(compareResult > 0) {
      left = middle + 1
    }else {
      right = middle;
      found = !compareResult
    }
  }
  return found ? left : ~left
};
goog.array.sort = function(arr, opt_compareFn) {
  goog.asserts.assert(arr.length != null);
  goog.array.ARRAY_PROTOTYPE_.sort.call(arr, opt_compareFn || goog.array.defaultCompare)
};
goog.array.stableSort = function(arr, opt_compareFn) {
  function stableCompareFn(obj1, obj2) {
    return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index
  }
  for(var i = 0;i < arr.length;i++) {
    arr[i] = {index:i, value:arr[i]}
  }
  var valueCompareFn = opt_compareFn || goog.array.defaultCompare;
  goog.array.sort(arr, stableCompareFn);
  for(i = 0;i < arr.length;i++) {
    arr[i] = arr[i].value
  }
};
goog.array.sortObjectsByKey = function(arr, key, opt_compareFn) {
  var compare = opt_compareFn || goog.array.defaultCompare;
  goog.array.sort(arr, function(a, b) {
    return compare(a[key], b[key])
  })
};
goog.array.equals = function(arr1, arr2, opt_equalsFn) {
  if(!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) || arr1.length != arr2.length) {
    return false
  }
  for(var l = arr1.length, equalsFn = opt_equalsFn || goog.array.defaultCompareEquality, i = 0;i < l;i++) {
    if(!equalsFn(arr1[i], arr2[i])) {
      return false
    }
  }
  return true
};
goog.array.compare = function(arr1, arr2, opt_equalsFn) {
  return goog.array.equals(arr1, arr2, opt_equalsFn)
};
goog.array.defaultCompare = function(a, b) {
  return a > b ? 1 : a < b ? -1 : 0
};
goog.array.defaultCompareEquality = function(a, b) {
  return a === b
};
goog.array.binaryInsert = function(array, value, opt_compareFn) {
  var index = goog.array.binarySearch(array, value, opt_compareFn);
  if(index < 0) {
    goog.array.insertAt(array, value, -(index + 1));
    return true
  }
  return false
};
goog.array.binaryRemove = function(array, value, opt_compareFn) {
  var index = goog.array.binarySearch(array, value, opt_compareFn);
  return index >= 0 ? goog.array.removeAt(array, index) : false
};
goog.array.bucket = function(array, sorter) {
  for(var buckets = {}, i = 0;i < array.length;i++) {
    var value = array[i], key = sorter(value, i, array);
    if(goog.isDef(key)) {
      var bucket = buckets[key] || (buckets[key] = []);
      bucket.push(value)
    }
  }
  return buckets
};
goog.array.repeat = function(value, n) {
  for(var array = [], i = 0;i < n;i++) {
    array[i] = value
  }
  return array
};
goog.array.flatten = function() {
  for(var result = [], i = 0;i < arguments.length;i++) {
    var element = arguments[i];
    goog.isArray(element) ? result.push.apply(result, goog.array.flatten.apply(null, element)) : result.push(element)
  }
  return result
};
goog.array.rotate = function(array, n) {
  goog.asserts.assert(array.length != null);
  if(array.length) {
    n %= array.length;
    if(n > 0) {
      goog.array.ARRAY_PROTOTYPE_.unshift.apply(array, array.splice(-n, n))
    }else {
      n < 0 && goog.array.ARRAY_PROTOTYPE_.push.apply(array, array.splice(0, -n))
    }
  }
  return array
};
goog.array.zip = function() {
  if(!arguments.length) {
    return[]
  }
  for(var result = [], i = 0;;i++) {
    for(var value = [], j = 0;j < arguments.length;j++) {
      var arr = arguments[j];
      if(i >= arr.length) {
        return result
      }
      value.push(arr[i])
    }
    result.push(value)
  }
};goog.math = {};
goog.math.Coordinate = function(opt_x, opt_y) {
  this.x = goog.isDef(opt_x) ? opt_x : 0;
  this.y = goog.isDef(opt_y) ? opt_y : 0
};
goog.math.Coordinate.prototype.clone = function() {
  return new goog.math.Coordinate(this.x, this.y)
};
if(goog.DEBUG) {
  goog.math.Coordinate.prototype.toString = function() {
    return"(" + this.x + ", " + this.y + ")"
  }
}
goog.math.Coordinate.equals = function(a, b) {
  if(a == b) {
    return true
  }
  if(!a || !b) {
    return false
  }
  return a.x == b.x && a.y == b.y
};
goog.math.Coordinate.distance = function(a, b) {
  var dx = a.x - b.x, dy = a.y - b.y;
  return Math.sqrt(dx * dx + dy * dy)
};
goog.math.Coordinate.squaredDistance = function(a, b) {
  var dx = a.x - b.x, dy = a.y - b.y;
  return dx * dx + dy * dy
};
goog.math.Coordinate.difference = function(a, b) {
  return new goog.math.Coordinate(a.x - b.x, a.y - b.y)
};
goog.math.Coordinate.sum = function(a, b) {
  return new goog.math.Coordinate(a.x + b.x, a.y + b.y)
};goog.math.Size = function(width, height) {
  this.width = width;
  this.height = height
};
goog.math.Size.equals = function(a, b) {
  if(a == b) {
    return true
  }
  if(!a || !b) {
    return false
  }
  return a.width == b.width && a.height == b.height
};
goog.math.Size.prototype.clone = function() {
  return new goog.math.Size(this.width, this.height)
};
if(goog.DEBUG) {
  goog.math.Size.prototype.toString = function() {
    return"(" + this.width + " x " + this.height + ")"
  }
}
goog.math.Size.prototype.area = function() {
  return this.width * this.height
};
goog.math.Size.prototype.isEmpty = function() {
  return!this.area()
};
goog.math.Size.prototype.ceil = function() {
  this.width = Math.ceil(this.width);
  this.height = Math.ceil(this.height);
  return this
};
goog.math.Size.prototype.floor = function() {
  this.width = Math.floor(this.width);
  this.height = Math.floor(this.height);
  return this
};
goog.math.Size.prototype.round = function() {
  this.width = Math.round(this.width);
  this.height = Math.round(this.height);
  return this
};
goog.math.Size.prototype.scale = function(s) {
  this.width *= s;
  this.height *= s;
  return this
};goog.object = {};
goog.object.forEach = function(obj, f, opt_obj) {
  for(var key in obj) {
    f.call(opt_obj, obj[key], key, obj)
  }
};
goog.object.filter = function(obj, f, opt_obj) {
  var res = {}, key;
  for(key in obj) {
    if(f.call(opt_obj, obj[key], key, obj)) {
      res[key] = obj[key]
    }
  }
  return res
};
goog.object.map = function(obj, f, opt_obj) {
  var res = {}, key;
  for(key in obj) {
    res[key] = f.call(opt_obj, obj[key], key, obj)
  }
  return res
};
goog.object.some = function(obj, f, opt_obj) {
  for(var key in obj) {
    if(f.call(opt_obj, obj[key], key, obj)) {
      return true
    }
  }
  return false
};
goog.object.every = function(obj, f, opt_obj) {
  for(var key in obj) {
    if(!f.call(opt_obj, obj[key], key, obj)) {
      return false
    }
  }
  return true
};
goog.object.getCount = function(obj) {
  var rv = 0, key;
  for(key in obj) {
    rv++
  }
  return rv
};
goog.object.getAnyKey = function(obj) {
  for(var key in obj) {
    return key
  }
};
goog.object.getAnyValue = function(obj) {
  for(var key in obj) {
    return obj[key]
  }
};
goog.object.contains = function(obj, val) {
  return goog.object.containsValue(obj, val)
};
goog.object.getValues = function(obj) {
  var res = [], i = 0, key;
  for(key in obj) {
    res[i++] = obj[key]
  }
  return res
};
goog.object.getKeys = function(obj) {
  var res = [], i = 0, key;
  for(key in obj) {
    res[i++] = key
  }
  return res
};
goog.object.containsKey = function(obj, key) {
  return key in obj
};
goog.object.containsValue = function(obj, val) {
  for(var key in obj) {
    if(obj[key] == val) {
      return true
    }
  }
  return false
};
goog.object.findKey = function(obj, f, opt_this) {
  for(var key in obj) {
    if(f.call(opt_this, obj[key], key, obj)) {
      return key
    }
  }
};
goog.object.findValue = function(obj, f, opt_this) {
  var key = goog.object.findKey(obj, f, opt_this);
  return key && obj[key]
};
goog.object.isEmpty = function(obj) {
  for(var key in obj) {
    return false
  }
  return true
};
goog.object.clear = function(obj) {
  for(var keys = goog.object.getKeys(obj), i = keys.length - 1;i >= 0;i--) {
    goog.object.remove(obj, keys[i])
  }
};
goog.object.remove = function(obj, key) {
  var rv;
  if(rv = key in obj) {
    delete obj[key]
  }
  return rv
};
goog.object.add = function(obj, key, val) {
  if(key in obj) {
    throw Error('The object already contains the key "' + key + '"');
  }
  goog.object.set(obj, key, val)
};
goog.object.get = function(obj, key, opt_val) {
  if(key in obj) {
    return obj[key]
  }
  return opt_val
};
goog.object.set = function(obj, key, value) {
  obj[key] = value
};
goog.object.setIfUndefined = function(obj, key, value) {
  return key in obj ? obj[key] : obj[key] = value
};
goog.object.clone = function(obj) {
  var res = {}, key;
  for(key in obj) {
    res[key] = obj[key]
  }
  return res
};
goog.object.transpose = function(obj) {
  var transposed = {}, key;
  for(key in obj) {
    transposed[obj[key]] = key
  }
  return transposed
};
goog.object.PROTOTYPE_FIELDS_ = ["constructor", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", "toLocaleString", "toString", "valueOf"];
goog.object.extend = function(target) {
  for(var key, source, i = 1;i < arguments.length;i++) {
    source = arguments[i];
    for(key in source) {
      target[key] = source[key]
    }
    for(var j = 0;j < goog.object.PROTOTYPE_FIELDS_.length;j++) {
      key = goog.object.PROTOTYPE_FIELDS_[j];
      if(Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key]
      }
    }
  }
};
goog.object.create = function() {
  var argLength = arguments.length;
  if(argLength == 1 && goog.isArray(arguments[0])) {
    return goog.object.create.apply(null, arguments[0])
  }
  if(argLength % 2) {
    throw Error("Uneven number of arguments");
  }
  for(var rv = {}, i = 0;i < argLength;i += 2) {
    rv[arguments[i]] = arguments[i + 1]
  }
  return rv
};
goog.object.createSet = function() {
  var argLength = arguments.length;
  if(argLength == 1 && goog.isArray(arguments[0])) {
    return goog.object.createSet.apply(null, arguments[0])
  }
  for(var rv = {}, i = 0;i < argLength;i++) {
    rv[arguments[i]] = true
  }
  return rv
};goog.userAgent = {};
goog.userAgent.ASSUME_IE = false;
goog.userAgent.ASSUME_GECKO = false;
goog.userAgent.ASSUME_WEBKIT = false;
goog.userAgent.ASSUME_MOBILE_WEBKIT = false;
goog.userAgent.ASSUME_OPERA = false;
goog.userAgent.BROWSER_KNOWN_ = goog.userAgent.ASSUME_IE || goog.userAgent.ASSUME_GECKO || goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_OPERA;
goog.userAgent.getUserAgentString = function() {
  return goog.global.navigator ? goog.global.navigator.userAgent : null
};
goog.userAgent.getNavigator = function() {
  return goog.global.navigator
};
goog.userAgent.init_ = function() {
  goog.userAgent.detectedOpera_ = false;
  goog.userAgent.detectedIe_ = false;
  goog.userAgent.detectedWebkit_ = false;
  goog.userAgent.detectedMobile_ = false;
  goog.userAgent.detectedGecko_ = false;
  var ua;
  if(!goog.userAgent.BROWSER_KNOWN_ && (ua = goog.userAgent.getUserAgentString())) {
    var navigator = goog.userAgent.getNavigator();
    goog.userAgent.detectedOpera_ = ua.indexOf("Opera") == 0;
    goog.userAgent.detectedIe_ = !goog.userAgent.detectedOpera_ && ua.indexOf("MSIE") != -1;
    goog.userAgent.detectedWebkit_ = !goog.userAgent.detectedOpera_ && ua.indexOf("WebKit") != -1;
    goog.userAgent.detectedMobile_ = goog.userAgent.detectedWebkit_ && ua.indexOf("Mobile") != -1;
    goog.userAgent.detectedGecko_ = !goog.userAgent.detectedOpera_ && !goog.userAgent.detectedWebkit_ && navigator.product == "Gecko"
  }
};
goog.userAgent.BROWSER_KNOWN_ || goog.userAgent.init_();
goog.userAgent.OPERA = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_OPERA : goog.userAgent.detectedOpera_;
goog.userAgent.IE = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_IE : goog.userAgent.detectedIe_;
goog.userAgent.GECKO = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_GECKO : goog.userAgent.detectedGecko_;
goog.userAgent.WEBKIT = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_MOBILE_WEBKIT : goog.userAgent.detectedWebkit_;
goog.userAgent.MOBILE = goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.detectedMobile_;
goog.userAgent.SAFARI = goog.userAgent.WEBKIT;
goog.userAgent.determinePlatform_ = function() {
  var navigator = goog.userAgent.getNavigator();
  return navigator && navigator.platform || ""
};
goog.userAgent.PLATFORM = goog.userAgent.determinePlatform_();
goog.userAgent.ASSUME_MAC = false;
goog.userAgent.ASSUME_WINDOWS = false;
goog.userAgent.ASSUME_LINUX = false;
goog.userAgent.ASSUME_X11 = false;
goog.userAgent.PLATFORM_KNOWN_ = goog.userAgent.ASSUME_MAC || goog.userAgent.ASSUME_WINDOWS || goog.userAgent.ASSUME_LINUX || goog.userAgent.ASSUME_X11;
goog.userAgent.initPlatform_ = function() {
  goog.userAgent.detectedMac_ = goog.string.contains(goog.userAgent.PLATFORM, "Mac");
  goog.userAgent.detectedWindows_ = goog.string.contains(goog.userAgent.PLATFORM, "Win");
  goog.userAgent.detectedLinux_ = goog.string.contains(goog.userAgent.PLATFORM, "Linux");
  goog.userAgent.detectedX11_ = !!goog.userAgent.getNavigator() && goog.string.contains(goog.userAgent.getNavigator().appVersion || "", "X11")
};
goog.userAgent.PLATFORM_KNOWN_ || goog.userAgent.initPlatform_();
goog.userAgent.MAC = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_MAC : goog.userAgent.detectedMac_;
goog.userAgent.WINDOWS = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_WINDOWS : goog.userAgent.detectedWindows_;
goog.userAgent.LINUX = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_LINUX : goog.userAgent.detectedLinux_;
goog.userAgent.X11 = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_X11 : goog.userAgent.detectedX11_;
goog.userAgent.determineVersion_ = function() {
  var version = "", re;
  if(goog.userAgent.OPERA && goog.global.opera) {
    var operaVersion = goog.global.opera.version;
    version = typeof operaVersion == "function" ? operaVersion() : operaVersion
  }else {
    if(goog.userAgent.GECKO) {
      re = /rv\:([^\);]+)(\)|;)/
    }else {
      if(goog.userAgent.IE) {
        re = /MSIE\s+([^\);]+)(\)|;)/
      }else {
        if(goog.userAgent.WEBKIT) {
          re = /WebKit\/(\S+)/
        }
      }
    }
    if(re) {
      var arr = re.exec(goog.userAgent.getUserAgentString());
      version = arr ? arr[1] : ""
    }
  }
  if(goog.userAgent.IE) {
    var docMode = goog.userAgent.getDocumentMode_();
    if(docMode > parseFloat(version)) {
      return String(docMode)
    }
  }
  return version
};
goog.userAgent.getDocumentMode_ = function() {
  var doc = goog.global.document;
  return doc ? doc.documentMode : undefined
};
goog.userAgent.VERSION = goog.userAgent.determineVersion_();
goog.userAgent.compare = function(v1, v2) {
  return goog.string.compareVersions(v1, v2)
};
goog.userAgent.isVersionCache_ = {};
goog.userAgent.isVersion = function(version) {
  return goog.userAgent.isVersionCache_[version] || (goog.userAgent.isVersionCache_[version] = goog.string.compareVersions(goog.userAgent.VERSION, version) >= 0)
};goog.dom = {};
goog.dom.BrowserFeature = {CAN_ADD_NAME_OR_TYPE_ATTRIBUTES:!goog.userAgent.IE || goog.userAgent.isVersion("9"), CAN_USE_INNER_TEXT:goog.userAgent.IE && !goog.userAgent.isVersion("9"), INNER_HTML_NEEDS_SCOPED_ELEMENT:goog.userAgent.IE};goog.dom.classes = {};
goog.dom.classes.set = function(element, className) {
  element.className = className
};
goog.dom.classes.get = function(element) {
  var className = element.className;
  return className && typeof className.split == "function" ? className.split(/\s+/) : []
};
goog.dom.classes.add = function(element) {
  var classes = goog.dom.classes.get(element), args = goog.array.slice(arguments, 1), b = goog.dom.classes.add_(classes, args);
  element.className = classes.join(" ");
  return b
};
goog.dom.classes.remove = function(element) {
  var classes = goog.dom.classes.get(element), args = goog.array.slice(arguments, 1), b = goog.dom.classes.remove_(classes, args);
  element.className = classes.join(" ");
  return b
};
goog.dom.classes.add_ = function(classes, args) {
  for(var rv = 0, i = 0;i < args.length;i++) {
    if(!goog.array.contains(classes, args[i])) {
      classes.push(args[i]);
      rv++
    }
  }
  return rv == args.length
};
goog.dom.classes.remove_ = function(classes, args) {
  for(var rv = 0, i = 0;i < classes.length;i++) {
    if(goog.array.contains(args, classes[i])) {
      goog.array.splice(classes, i--, 1);
      rv++
    }
  }
  return rv == args.length
};
goog.dom.classes.swap = function(element, fromClass, toClass) {
  for(var classes = goog.dom.classes.get(element), removed = false, i = 0;i < classes.length;i++) {
    if(classes[i] == fromClass) {
      goog.array.splice(classes, i--, 1);
      removed = true
    }
  }
  if(removed) {
    classes.push(toClass);
    element.className = classes.join(" ")
  }
  return removed
};
goog.dom.classes.addRemove = function(element, classesToRemove, classesToAdd) {
  var classes = goog.dom.classes.get(element);
  if(goog.isString(classesToRemove)) {
    goog.array.remove(classes, classesToRemove)
  }else {
    goog.isArray(classesToRemove) && goog.dom.classes.remove_(classes, classesToRemove)
  }
  if(goog.isString(classesToAdd) && !goog.array.contains(classes, classesToAdd)) {
    classes.push(classesToAdd)
  }else {
    goog.isArray(classesToAdd) && goog.dom.classes.add_(classes, classesToAdd)
  }
  element.className = classes.join(" ")
};
goog.dom.classes.has = function(element, className) {
  return goog.array.contains(goog.dom.classes.get(element), className)
};
goog.dom.classes.enable = function(element, className, enabled) {
  enabled ? goog.dom.classes.add(element, className) : goog.dom.classes.remove(element, className)
};
goog.dom.classes.toggle = function(element, className) {
  var add = !goog.dom.classes.has(element, className);
  goog.dom.classes.enable(element, className, add);
  return add
};goog.dom.TagName = {A:"A", ABBR:"ABBR", ACRONYM:"ACRONYM", ADDRESS:"ADDRESS", APPLET:"APPLET", AREA:"AREA", B:"B", BASE:"BASE", BASEFONT:"BASEFONT", BDO:"BDO", BIG:"BIG", BLOCKQUOTE:"BLOCKQUOTE", BODY:"BODY", BR:"BR", BUTTON:"BUTTON", CANVAS:"CANVAS", CAPTION:"CAPTION", CENTER:"CENTER", CITE:"CITE", CODE:"CODE", COL:"COL", COLGROUP:"COLGROUP", DD:"DD", DEL:"DEL", DFN:"DFN", DIR:"DIR", DIV:"DIV", DL:"DL", DT:"DT", EM:"EM", FIELDSET:"FIELDSET", FONT:"FONT", FORM:"FORM", FRAME:"FRAME", FRAMESET:"FRAMESET", 
H1:"H1", H2:"H2", H3:"H3", H4:"H4", H5:"H5", H6:"H6", HEAD:"HEAD", HR:"HR", HTML:"HTML", I:"I", IFRAME:"IFRAME", IMG:"IMG", INPUT:"INPUT", INS:"INS", ISINDEX:"ISINDEX", KBD:"KBD", LABEL:"LABEL", LEGEND:"LEGEND", LI:"LI", LINK:"LINK", MAP:"MAP", MENU:"MENU", META:"META", NOFRAMES:"NOFRAMES", NOSCRIPT:"NOSCRIPT", OBJECT:"OBJECT", OL:"OL", OPTGROUP:"OPTGROUP", OPTION:"OPTION", P:"P", PARAM:"PARAM", PRE:"PRE", Q:"Q", S:"S", SAMP:"SAMP", SCRIPT:"SCRIPT", SELECT:"SELECT", SMALL:"SMALL", SPAN:"SPAN", STRIKE:"STRIKE", 
STRONG:"STRONG", STYLE:"STYLE", SUB:"SUB", SUP:"SUP", TABLE:"TABLE", TBODY:"TBODY", TD:"TD", TEXTAREA:"TEXTAREA", TFOOT:"TFOOT", TH:"TH", THEAD:"THEAD", TITLE:"TITLE", TR:"TR", TT:"TT", U:"U", UL:"UL", VAR:"VAR"};goog.dom.ASSUME_QUIRKS_MODE = false;
goog.dom.ASSUME_STANDARDS_MODE = false;
goog.dom.COMPAT_MODE_KNOWN_ = goog.dom.ASSUME_QUIRKS_MODE || goog.dom.ASSUME_STANDARDS_MODE;
goog.dom.NodeType = {ELEMENT:1, ATTRIBUTE:2, TEXT:3, CDATA_SECTION:4, ENTITY_REFERENCE:5, ENTITY:6, PROCESSING_INSTRUCTION:7, COMMENT:8, DOCUMENT:9, DOCUMENT_TYPE:10, DOCUMENT_FRAGMENT:11, NOTATION:12};
goog.dom.getDomHelper = function(opt_element) {
  return opt_element ? new goog.dom.DomHelper(goog.dom.getOwnerDocument(opt_element)) : goog.dom.defaultDomHelper_ || (goog.dom.defaultDomHelper_ = new goog.dom.DomHelper)
};
goog.dom.getDocument = function() {
  return document
};
goog.dom.getElement = function(element) {
  return goog.isString(element) ? document.getElementById(element) : element
};
goog.dom.$ = goog.dom.getElement;
goog.dom.getElementsByTagNameAndClass = function(opt_tag, opt_class, opt_el) {
  return goog.dom.getElementsByTagNameAndClass_(document, opt_tag, opt_class, opt_el)
};
goog.dom.getElementsByClass = function(className, opt_el) {
  var parent = opt_el || document;
  if(goog.dom.canUseQuerySelector_(parent)) {
    return parent.querySelectorAll("." + className)
  }else {
    if(parent.getElementsByClassName) {
      return parent.getElementsByClassName(className)
    }
  }
  return goog.dom.getElementsByTagNameAndClass_(document, "*", className, opt_el)
};
goog.dom.getElementByClass = function(className, opt_el) {
  var parent = opt_el || document, retVal = null;
  return(retVal = goog.dom.canUseQuerySelector_(parent) ? parent.querySelector("." + className) : goog.dom.getElementsByClass(className, opt_el)[0]) || null
};
goog.dom.canUseQuerySelector_ = function(parent) {
  return parent.querySelectorAll && parent.querySelector && (!goog.userAgent.WEBKIT || goog.dom.isCss1CompatMode_(document) || goog.userAgent.isVersion("528"))
};
goog.dom.getElementsByTagNameAndClass_ = function(doc, opt_tag, opt_class, opt_el) {
  var parent = opt_el || doc, tagName = opt_tag && opt_tag != "*" ? opt_tag.toUpperCase() : "";
  if(goog.dom.canUseQuerySelector_(parent) && (tagName || opt_class)) {
    var query = tagName + (opt_class ? "." + opt_class : "");
    return parent.querySelectorAll(query)
  }
  if(opt_class && parent.getElementsByClassName) {
    var els = parent.getElementsByClassName(opt_class);
    if(tagName) {
      for(var arrayLike = {}, len = 0, i = 0, el;el = els[i];i++) {
        if(tagName == el.nodeName) {
          arrayLike[len++] = el
        }
      }
      arrayLike.length = len;
      return arrayLike
    }else {
      return els
    }
  }
  els = parent.getElementsByTagName(tagName || "*");
  if(opt_class) {
    arrayLike = {};
    for(i = len = 0;el = els[i];i++) {
      var className = el.className;
      if(typeof className.split == "function" && goog.array.contains(className.split(/\s+/), opt_class)) {
        arrayLike[len++] = el
      }
    }
    arrayLike.length = len;
    return arrayLike
  }else {
    return els
  }
};
goog.dom.$$ = goog.dom.getElementsByTagNameAndClass;
goog.dom.setProperties = function(element, properties) {
  goog.object.forEach(properties, function(val, key) {
    if(key == "style") {
      element.style.cssText = val
    }else {
      if(key == "class") {
        element.className = val
      }else {
        if(key == "for") {
          element.htmlFor = val
        }else {
          if(key in goog.dom.DIRECT_ATTRIBUTE_MAP_) {
            element.setAttribute(goog.dom.DIRECT_ATTRIBUTE_MAP_[key], val)
          }else {
            element[key] = val
          }
        }
      }
    }
  })
};
goog.dom.DIRECT_ATTRIBUTE_MAP_ = {cellpadding:"cellPadding", cellspacing:"cellSpacing", colspan:"colSpan", rowspan:"rowSpan", valign:"vAlign", height:"height", width:"width", usemap:"useMap", frameborder:"frameBorder", type:"type"};
goog.dom.getViewportSize = function(opt_window) {
  return goog.dom.getViewportSize_(opt_window || window)
};
goog.dom.getViewportSize_ = function(win) {
  var doc = win.document;
  if(goog.userAgent.WEBKIT && !goog.userAgent.isVersion("500") && !goog.userAgent.MOBILE) {
    if(typeof win.innerHeight == "undefined") {
      win = window
    }
    var innerHeight = win.innerHeight, scrollHeight = win.document.documentElement.scrollHeight;
    if(win == win.top) {
      if(scrollHeight < innerHeight) {
        innerHeight -= 15
      }
    }
    return new goog.math.Size(win.innerWidth, innerHeight)
  }
  var readsFromDocumentElement = goog.dom.isCss1CompatMode_(doc);
  if(goog.userAgent.OPERA && !goog.userAgent.isVersion("9.50")) {
    readsFromDocumentElement = false
  }
  var el = readsFromDocumentElement ? doc.documentElement : doc.body;
  return new goog.math.Size(el.clientWidth, el.clientHeight)
};
goog.dom.getDocumentHeight = function() {
  return goog.dom.getDocumentHeight_(window)
};
goog.dom.getDocumentHeight_ = function(win) {
  var doc = win.document, height = 0;
  if(doc) {
    var vh = goog.dom.getViewportSize_(win).height, body = doc.body, docEl = doc.documentElement;
    if(goog.dom.isCss1CompatMode_(doc) && docEl.scrollHeight) {
      height = docEl.scrollHeight != vh ? docEl.scrollHeight : docEl.offsetHeight
    }else {
      var sh = docEl.scrollHeight, oh = docEl.offsetHeight;
      if(docEl.clientHeight != oh) {
        sh = body.scrollHeight;
        oh = body.offsetHeight
      }
      height = sh > vh ? sh > oh ? sh : oh : sh < oh ? sh : oh
    }
  }
  return height
};
goog.dom.getPageScroll = function(opt_window) {
  var win = opt_window || goog.global || window;
  return goog.dom.getDomHelper(win.document).getDocumentScroll()
};
goog.dom.getDocumentScroll = function() {
  return goog.dom.getDocumentScroll_(document)
};
goog.dom.getDocumentScroll_ = function(doc) {
  var el = goog.dom.getDocumentScrollElement_(doc);
  return new goog.math.Coordinate(el.scrollLeft, el.scrollTop)
};
goog.dom.getDocumentScrollElement = function() {
  return goog.dom.getDocumentScrollElement_(document)
};
goog.dom.getDocumentScrollElement_ = function(doc) {
  return!goog.userAgent.WEBKIT && goog.dom.isCss1CompatMode_(doc) ? doc.documentElement : doc.body
};
goog.dom.getWindow = function(opt_doc) {
  return opt_doc ? goog.dom.getWindow_(opt_doc) : window
};
goog.dom.getWindow_ = function(doc) {
  return doc.parentWindow || doc.defaultView
};
goog.dom.createDom = function() {
  return goog.dom.createDom_(document, arguments)
};
goog.dom.createDom_ = function(doc, args) {
  var tagName = args[0], attributes = args[1];
  if(!goog.dom.BrowserFeature.CAN_ADD_NAME_OR_TYPE_ATTRIBUTES && attributes && (attributes.name || attributes.type)) {
    var tagNameArr = ["<", tagName];
    attributes.name && tagNameArr.push(' name="', goog.string.htmlEscape(attributes.name), '"');
    if(attributes.type) {
      tagNameArr.push(' type="', goog.string.htmlEscape(attributes.type), '"');
      var clone = {};
      goog.object.extend(clone, attributes);
      attributes = clone;
      delete attributes.type
    }
    tagNameArr.push(">");
    tagName = tagNameArr.join("")
  }
  var element = doc.createElement(tagName);
  if(attributes) {
    if(goog.isString(attributes)) {
      element.className = attributes
    }else {
      goog.isArray(attributes) ? goog.dom.classes.add.apply(null, [element].concat(attributes)) : goog.dom.setProperties(element, attributes)
    }
  }
  args.length > 2 && goog.dom.append_(doc, element, args, 2);
  return element
};
goog.dom.append_ = function(doc, parent, args, startIndex) {
  function childHandler(child) {
    if(child) {
      parent.appendChild(goog.isString(child) ? doc.createTextNode(child) : child)
    }
  }
  for(var i = startIndex;i < args.length;i++) {
    var arg = args[i];
    goog.isArrayLike(arg) && !goog.dom.isNodeLike(arg) ? goog.array.forEach(goog.dom.isNodeList(arg) ? goog.array.clone(arg) : arg, childHandler) : childHandler(arg)
  }
};
goog.dom.$dom = goog.dom.createDom;
goog.dom.createElement = function(name) {
  return document.createElement(name)
};
goog.dom.createTextNode = function(content) {
  return document.createTextNode(content)
};
goog.dom.createTable = function(rows, columns, opt_fillWithNbsp) {
  return goog.dom.createTable_(document, rows, columns, !!opt_fillWithNbsp)
};
goog.dom.createTable_ = function(doc, rows, columns, fillWithNbsp) {
  for(var rowHtml = ["<tr>"], i = 0;i < columns;i++) {
    rowHtml.push(fillWithNbsp ? "<td>&nbsp;</td>" : "<td></td>")
  }
  rowHtml.push("</tr>");
  rowHtml = rowHtml.join("");
  var totalHtml = ["<table>"];
  for(i = 0;i < rows;i++) {
    totalHtml.push(rowHtml)
  }
  totalHtml.push("</table>");
  var elem = doc.createElement(goog.dom.TagName.DIV);
  elem.innerHTML = totalHtml.join("");
  return elem.removeChild(elem.firstChild)
};
goog.dom.htmlToDocumentFragment = function(htmlString) {
  return goog.dom.htmlToDocumentFragment_(document, htmlString)
};
goog.dom.htmlToDocumentFragment_ = function(doc, htmlString) {
  var tempDiv = doc.createElement("div");
  if(goog.dom.BrowserFeature.INNER_HTML_NEEDS_SCOPED_ELEMENT) {
    tempDiv.innerHTML = "<br>" + htmlString;
    tempDiv.removeChild(tempDiv.firstChild)
  }else {
    tempDiv.innerHTML = htmlString
  }
  if(tempDiv.childNodes.length == 1) {
    return tempDiv.removeChild(tempDiv.firstChild)
  }else {
    for(var fragment = doc.createDocumentFragment();tempDiv.firstChild;) {
      fragment.appendChild(tempDiv.firstChild)
    }
    return fragment
  }
};
goog.dom.getCompatMode = function() {
  return goog.dom.isCss1CompatMode() ? "CSS1Compat" : "BackCompat"
};
goog.dom.isCss1CompatMode = function() {
  return goog.dom.isCss1CompatMode_(document)
};
goog.dom.isCss1CompatMode_ = function(doc) {
  if(goog.dom.COMPAT_MODE_KNOWN_) {
    return goog.dom.ASSUME_STANDARDS_MODE
  }
  return doc.compatMode == "CSS1Compat"
};
goog.dom.canHaveChildren = function(node) {
  if(node.nodeType != goog.dom.NodeType.ELEMENT) {
    return false
  }
  switch(node.tagName) {
    case goog.dom.TagName.APPLET:
    ;
    case goog.dom.TagName.AREA:
    ;
    case goog.dom.TagName.BASE:
    ;
    case goog.dom.TagName.BR:
    ;
    case goog.dom.TagName.COL:
    ;
    case goog.dom.TagName.FRAME:
    ;
    case goog.dom.TagName.HR:
    ;
    case goog.dom.TagName.IMG:
    ;
    case goog.dom.TagName.INPUT:
    ;
    case goog.dom.TagName.IFRAME:
    ;
    case goog.dom.TagName.ISINDEX:
    ;
    case goog.dom.TagName.LINK:
    ;
    case goog.dom.TagName.NOFRAMES:
    ;
    case goog.dom.TagName.NOSCRIPT:
    ;
    case goog.dom.TagName.META:
    ;
    case goog.dom.TagName.OBJECT:
    ;
    case goog.dom.TagName.PARAM:
    ;
    case goog.dom.TagName.SCRIPT:
    ;
    case goog.dom.TagName.STYLE:
      return false
  }
  return true
};
goog.dom.appendChild = function(parent, child) {
  parent.appendChild(child)
};
goog.dom.append = function(parent) {
  goog.dom.append_(goog.dom.getOwnerDocument(parent), parent, arguments, 1)
};
goog.dom.removeChildren = function(node) {
  for(var child;child = node.firstChild;) {
    node.removeChild(child)
  }
};
goog.dom.insertSiblingBefore = function(newNode, refNode) {
  refNode.parentNode && refNode.parentNode.insertBefore(newNode, refNode)
};
goog.dom.insertSiblingAfter = function(newNode, refNode) {
  refNode.parentNode && refNode.parentNode.insertBefore(newNode, refNode.nextSibling)
};
goog.dom.removeNode = function(node) {
  return node && node.parentNode ? node.parentNode.removeChild(node) : null
};
goog.dom.replaceNode = function(newNode, oldNode) {
  var parent = oldNode.parentNode;
  parent && parent.replaceChild(newNode, oldNode)
};
goog.dom.flattenElement = function(element) {
  var child, parent = element.parentNode;
  if(parent && parent.nodeType != goog.dom.NodeType.DOCUMENT_FRAGMENT) {
    if(element.removeNode) {
      return element.removeNode(false)
    }else {
      for(;child = element.firstChild;) {
        parent.insertBefore(child, element)
      }
      return goog.dom.removeNode(element)
    }
  }
};
goog.dom.getFirstElementChild = function(node) {
  return goog.dom.getNextElementNode_(node.firstChild, true)
};
goog.dom.getLastElementChild = function(node) {
  return goog.dom.getNextElementNode_(node.lastChild, false)
};
goog.dom.getNextElementSibling = function(node) {
  return goog.dom.getNextElementNode_(node.nextSibling, true)
};
goog.dom.getPreviousElementSibling = function(node) {
  return goog.dom.getNextElementNode_(node.previousSibling, false)
};
goog.dom.getNextElementNode_ = function(node, forward) {
  for(;node && node.nodeType != goog.dom.NodeType.ELEMENT;) {
    node = forward ? node.nextSibling : node.previousSibling
  }
  return node
};
goog.dom.getNextNode = function(node) {
  if(!node) {
    return null
  }
  if(node.firstChild) {
    return node.firstChild
  }
  for(;node && !node.nextSibling;) {
    node = node.parentNode
  }
  return node ? node.nextSibling : null
};
goog.dom.getPreviousNode = function(node) {
  if(!node) {
    return null
  }
  if(!node.previousSibling) {
    return node.parentNode
  }
  for(node = node.previousSibling;node && node.lastChild;) {
    node = node.lastChild
  }
  return node
};
goog.dom.isNodeLike = function(obj) {
  return goog.isObject(obj) && obj.nodeType > 0
};
goog.dom.contains = function(parent, descendant) {
  if(parent.contains && descendant.nodeType == goog.dom.NodeType.ELEMENT) {
    return parent == descendant || parent.contains(descendant)
  }
  if(typeof parent.compareDocumentPosition != "undefined") {
    return parent == descendant || Boolean(parent.compareDocumentPosition(descendant) & 16)
  }
  for(;descendant && parent != descendant;) {
    descendant = descendant.parentNode
  }
  return descendant == parent
};
goog.dom.compareNodeOrder = function(node1, node2) {
  if(node1 == node2) {
    return 0
  }
  if(node1.compareDocumentPosition) {
    return node1.compareDocumentPosition(node2) & 2 ? 1 : -1
  }
  if("sourceIndex" in node1 || node1.parentNode && "sourceIndex" in node1.parentNode) {
    var isElement1 = node1.nodeType == goog.dom.NodeType.ELEMENT, isElement2 = node2.nodeType == goog.dom.NodeType.ELEMENT;
    if(isElement1 && isElement2) {
      return node1.sourceIndex - node2.sourceIndex
    }else {
      var parent1 = node1.parentNode, parent2 = node2.parentNode;
      if(parent1 == parent2) {
        return goog.dom.compareSiblingOrder_(node1, node2)
      }
      if(!isElement1 && goog.dom.contains(parent1, node2)) {
        return-1 * goog.dom.compareParentsDescendantNodeIe_(node1, node2)
      }
      if(!isElement2 && goog.dom.contains(parent2, node1)) {
        return goog.dom.compareParentsDescendantNodeIe_(node2, node1)
      }
      return(isElement1 ? node1.sourceIndex : parent1.sourceIndex) - (isElement2 ? node2.sourceIndex : parent2.sourceIndex)
    }
  }
  var doc = goog.dom.getOwnerDocument(node1), range1, range2;
  range1 = doc.createRange();
  range1.selectNode(node1);
  range1.collapse(true);
  range2 = doc.createRange();
  range2.selectNode(node2);
  range2.collapse(true);
  return range1.compareBoundaryPoints(goog.global.Range.START_TO_END, range2)
};
goog.dom.compareParentsDescendantNodeIe_ = function(textNode, node) {
  var parent = textNode.parentNode;
  if(parent == node) {
    return-1
  }
  for(var sibling = node;sibling.parentNode != parent;) {
    sibling = sibling.parentNode
  }
  return goog.dom.compareSiblingOrder_(sibling, textNode)
};
goog.dom.compareSiblingOrder_ = function(node1, node2) {
  for(var s = node2;s = s.previousSibling;) {
    if(s == node1) {
      return-1
    }
  }
  return 1
};
goog.dom.findCommonAncestor = function() {
  var i, count = arguments.length;
  if(count) {
    if(count == 1) {
      return arguments[0]
    }
  }else {
    return null
  }
  var paths = [], minLength = Infinity;
  for(i = 0;i < count;i++) {
    for(var ancestors = [], node = arguments[i];node;) {
      ancestors.unshift(node);
      node = node.parentNode
    }
    paths.push(ancestors);
    minLength = Math.min(minLength, ancestors.length)
  }
  var output = null;
  for(i = 0;i < minLength;i++) {
    for(var first = paths[0][i], j = 1;j < count;j++) {
      if(first != paths[j][i]) {
        return output
      }
    }
    output = first
  }
  return output
};
goog.dom.getOwnerDocument = function(node) {
  return node.nodeType == goog.dom.NodeType.DOCUMENT ? node : node.ownerDocument || node.document
};
goog.dom.getFrameContentDocument = function(frame) {
  var doc;
  return doc = goog.userAgent.WEBKIT ? frame.document || frame.contentWindow.document : frame.contentDocument || frame.contentWindow.document
};
goog.dom.getFrameContentWindow = function(frame) {
  return frame.contentWindow || goog.dom.getWindow_(goog.dom.getFrameContentDocument(frame))
};
goog.dom.setTextContent = function(element, text) {
  if("textContent" in element) {
    element.textContent = text
  }else {
    if(element.firstChild && element.firstChild.nodeType == goog.dom.NodeType.TEXT) {
      for(;element.lastChild != element.firstChild;) {
        element.removeChild(element.lastChild)
      }
      element.firstChild.data = text
    }else {
      goog.dom.removeChildren(element);
      var doc = goog.dom.getOwnerDocument(element);
      element.appendChild(doc.createTextNode(text))
    }
  }
};
goog.dom.getOuterHtml = function(element) {
  if("outerHTML" in element) {
    return element.outerHTML
  }else {
    var doc = goog.dom.getOwnerDocument(element), div = doc.createElement("div");
    div.appendChild(element.cloneNode(true));
    return div.innerHTML
  }
};
goog.dom.findNode = function(root, p) {
  var rv = [], found = goog.dom.findNodes_(root, p, rv, true);
  return found ? rv[0] : undefined
};
goog.dom.findNodes = function(root, p) {
  var rv = [];
  goog.dom.findNodes_(root, p, rv, false);
  return rv
};
goog.dom.findNodes_ = function(root, p, rv, findOne) {
  if(root != null) {
    for(var i = 0, child;child = root.childNodes[i];i++) {
      if(p(child)) {
        rv.push(child);
        if(findOne) {
          return true
        }
      }
      if(goog.dom.findNodes_(child, p, rv, findOne)) {
        return true
      }
    }
  }
  return false
};
goog.dom.TAGS_TO_IGNORE_ = {SCRIPT:1, STYLE:1, HEAD:1, IFRAME:1, OBJECT:1};
goog.dom.PREDEFINED_TAG_VALUES_ = {IMG:" ", BR:"\n"};
goog.dom.isFocusableTabIndex = function(element) {
  var attrNode = element.getAttributeNode("tabindex");
  if(attrNode && attrNode.specified) {
    var index = element.tabIndex;
    return goog.isNumber(index) && index >= 0
  }
  return false
};
goog.dom.setFocusableTabIndex = function(element, enable) {
  if(enable) {
    element.tabIndex = 0
  }else {
    element.removeAttribute("tabIndex")
  }
};
goog.dom.getTextContent = function(node) {
  var textContent;
  if(goog.dom.BrowserFeature.CAN_USE_INNER_TEXT && "innerText" in node) {
    textContent = goog.string.canonicalizeNewlines(node.innerText)
  }else {
    var buf = [];
    goog.dom.getTextContent_(node, buf, true);
    textContent = buf.join("")
  }
  textContent = textContent.replace(/ \xAD /g, " ").replace(/\xAD/g, "");
  goog.userAgent.IE || (textContent = textContent.replace(/ +/g, " "));
  if(textContent != " ") {
    textContent = textContent.replace(/^\s*/, "")
  }
  return textContent
};
goog.dom.getRawTextContent = function(node) {
  var buf = [];
  goog.dom.getTextContent_(node, buf, false);
  return buf.join("")
};
goog.dom.getTextContent_ = function(node, buf, normalizeWhitespace) {
  if(!(node.nodeName in goog.dom.TAGS_TO_IGNORE_)) {
    if(node.nodeType == goog.dom.NodeType.TEXT) {
      normalizeWhitespace ? buf.push(String(node.nodeValue).replace(/(\r\n|\r|\n)/g, "")) : buf.push(node.nodeValue)
    }else {
      if(node.nodeName in goog.dom.PREDEFINED_TAG_VALUES_) {
        buf.push(goog.dom.PREDEFINED_TAG_VALUES_[node.nodeName])
      }else {
        for(var child = node.firstChild;child;) {
          goog.dom.getTextContent_(child, buf, normalizeWhitespace);
          child = child.nextSibling
        }
      }
    }
  }
};
goog.dom.getNodeTextLength = function(node) {
  return goog.dom.getTextContent(node).length
};
goog.dom.getNodeTextOffset = function(node, opt_offsetParent) {
  for(var root = opt_offsetParent || goog.dom.getOwnerDocument(node).body, buf = [];node && node != root;) {
    for(var cur = node;cur = cur.previousSibling;) {
      buf.unshift(goog.dom.getTextContent(cur))
    }
    node = node.parentNode
  }
  return goog.string.trimLeft(buf.join("")).replace(/ +/g, " ").length
};
goog.dom.getNodeAtOffset = function(parent, offset, opt_result) {
  for(var stack = [parent], pos = 0, cur;stack.length > 0 && pos < offset;) {
    cur = stack.pop();
    if(!(cur.nodeName in goog.dom.TAGS_TO_IGNORE_)) {
      if(cur.nodeType == goog.dom.NodeType.TEXT) {
        var text = cur.nodeValue.replace(/(\r\n|\r|\n)/g, "").replace(/ +/g, " ");
        pos += text.length
      }else {
        if(cur.nodeName in goog.dom.PREDEFINED_TAG_VALUES_) {
          pos += goog.dom.PREDEFINED_TAG_VALUES_[cur.nodeName].length
        }else {
          for(var i = cur.childNodes.length - 1;i >= 0;i--) {
            stack.push(cur.childNodes[i])
          }
        }
      }
    }
  }
  if(goog.isObject(opt_result)) {
    opt_result.remainder = cur ? cur.nodeValue.length + offset - pos - 1 : 0;
    opt_result.node = cur
  }
  return cur
};
goog.dom.isNodeList = function(val) {
  if(val && typeof val.length == "number") {
    if(goog.isObject(val)) {
      return typeof val.item == "function" || typeof val.item == "string"
    }else {
      if(goog.isFunction(val)) {
        return typeof val.item == "function"
      }
    }
  }
  return false
};
goog.dom.getAncestorByTagNameAndClass = function(element, opt_tag, opt_class) {
  var tagName = opt_tag ? opt_tag.toUpperCase() : null;
  return goog.dom.getAncestor(element, function(node) {
    return(!tagName || node.nodeName == tagName) && (!opt_class || goog.dom.classes.has(node, opt_class))
  }, true)
};
goog.dom.getAncestor = function(element, matcher, opt_includeNode, opt_maxSearchSteps) {
  if(!opt_includeNode) {
    element = element.parentNode
  }
  for(var ignoreSearchSteps = opt_maxSearchSteps == null, steps = 0;element && (ignoreSearchSteps || steps <= opt_maxSearchSteps);) {
    if(matcher(element)) {
      return element
    }
    element = element.parentNode;
    steps++
  }
  return null
};
goog.dom.DomHelper = function(opt_document) {
  this.document_ = opt_document || goog.global.document || document
};
goog.dom.DomHelper.prototype.getDomHelper = goog.dom.getDomHelper;
goog.dom.DomHelper.prototype.getDocument = function() {
  return this.document_
};
goog.dom.DomHelper.prototype.getElement = function(element) {
  return goog.isString(element) ? this.document_.getElementById(element) : element
};
goog.dom.DomHelper.prototype.$ = goog.dom.DomHelper.prototype.getElement;
goog.dom.DomHelper.prototype.getElementsByTagNameAndClass = function(opt_tag, opt_class, opt_el) {
  return goog.dom.getElementsByTagNameAndClass_(this.document_, opt_tag, opt_class, opt_el)
};
goog.dom.DomHelper.prototype.getElementsByClass = function(className, opt_el) {
  var doc = opt_el || this.document_;
  return goog.dom.getElementsByClass(className, doc)
};
goog.dom.DomHelper.prototype.getElementByClass = function(className, opt_el) {
  var doc = opt_el || this.document_;
  return goog.dom.getElementByClass(className, doc)
};
goog.dom.DomHelper.prototype.$$ = goog.dom.DomHelper.prototype.getElementsByTagNameAndClass;
goog.dom.DomHelper.prototype.setProperties = goog.dom.setProperties;
goog.dom.DomHelper.prototype.getViewportSize = function(opt_window) {
  return goog.dom.getViewportSize(opt_window || this.getWindow())
};
goog.dom.DomHelper.prototype.getDocumentHeight = function() {
  return goog.dom.getDocumentHeight_(this.getWindow())
};
goog.dom.DomHelper.prototype.createDom = function() {
  return goog.dom.createDom_(this.document_, arguments)
};
goog.dom.DomHelper.prototype.$dom = goog.dom.DomHelper.prototype.createDom;
goog.dom.DomHelper.prototype.createElement = function(name) {
  return this.document_.createElement(name)
};
goog.dom.DomHelper.prototype.createTextNode = function(content) {
  return this.document_.createTextNode(content)
};
goog.dom.DomHelper.prototype.createTable = function(rows, columns, opt_fillWithNbsp) {
  return goog.dom.createTable_(this.document_, rows, columns, !!opt_fillWithNbsp)
};
goog.dom.DomHelper.prototype.htmlToDocumentFragment = function(htmlString) {
  return goog.dom.htmlToDocumentFragment_(this.document_, htmlString)
};
goog.dom.DomHelper.prototype.getCompatMode = function() {
  return this.isCss1CompatMode() ? "CSS1Compat" : "BackCompat"
};
goog.dom.DomHelper.prototype.isCss1CompatMode = function() {
  return goog.dom.isCss1CompatMode_(this.document_)
};
goog.dom.DomHelper.prototype.getWindow = function() {
  return goog.dom.getWindow_(this.document_)
};
goog.dom.DomHelper.prototype.getDocumentScrollElement = function() {
  return goog.dom.getDocumentScrollElement_(this.document_)
};
goog.dom.DomHelper.prototype.getDocumentScroll = function() {
  return goog.dom.getDocumentScroll_(this.document_)
};
goog.dom.DomHelper.prototype.appendChild = goog.dom.appendChild;
goog.dom.DomHelper.prototype.append = goog.dom.append;
goog.dom.DomHelper.prototype.removeChildren = goog.dom.removeChildren;
goog.dom.DomHelper.prototype.insertSiblingBefore = goog.dom.insertSiblingBefore;
goog.dom.DomHelper.prototype.insertSiblingAfter = goog.dom.insertSiblingAfter;
goog.dom.DomHelper.prototype.removeNode = goog.dom.removeNode;
goog.dom.DomHelper.prototype.replaceNode = goog.dom.replaceNode;
goog.dom.DomHelper.prototype.flattenElement = goog.dom.flattenElement;
goog.dom.DomHelper.prototype.getFirstElementChild = goog.dom.getFirstElementChild;
goog.dom.DomHelper.prototype.getLastElementChild = goog.dom.getLastElementChild;
goog.dom.DomHelper.prototype.getNextElementSibling = goog.dom.getNextElementSibling;
goog.dom.DomHelper.prototype.getPreviousElementSibling = goog.dom.getPreviousElementSibling;
goog.dom.DomHelper.prototype.getNextNode = goog.dom.getNextNode;
goog.dom.DomHelper.prototype.getPreviousNode = goog.dom.getPreviousNode;
goog.dom.DomHelper.prototype.isNodeLike = goog.dom.isNodeLike;
goog.dom.DomHelper.prototype.contains = goog.dom.contains;
goog.dom.DomHelper.prototype.getOwnerDocument = goog.dom.getOwnerDocument;
goog.dom.DomHelper.prototype.getFrameContentDocument = goog.dom.getFrameContentDocument;
goog.dom.DomHelper.prototype.getFrameContentWindow = goog.dom.getFrameContentWindow;
goog.dom.DomHelper.prototype.setTextContent = goog.dom.setTextContent;
goog.dom.DomHelper.prototype.findNode = goog.dom.findNode;
goog.dom.DomHelper.prototype.findNodes = goog.dom.findNodes;
goog.dom.DomHelper.prototype.getTextContent = goog.dom.getTextContent;
goog.dom.DomHelper.prototype.getNodeTextLength = goog.dom.getNodeTextLength;
goog.dom.DomHelper.prototype.getNodeTextOffset = goog.dom.getNodeTextOffset;
goog.dom.DomHelper.prototype.getAncestorByTagNameAndClass = goog.dom.getAncestorByTagNameAndClass;
goog.dom.DomHelper.prototype.getAncestor = goog.dom.getAncestor;goog.debug.entryPointRegistry = {};
goog.debug.EntryPointMonitor = function() {
};
goog.debug.entryPointRegistry.refList_ = [];
goog.debug.entryPointRegistry.register = function(callback) {
  goog.debug.entryPointRegistry.refList_[goog.debug.entryPointRegistry.refList_.length] = callback
};
goog.debug.entryPointRegistry.monitorAll = function(monitor) {
  for(var transformer = goog.bind(monitor.wrap, monitor), i = 0;i < goog.debug.entryPointRegistry.refList_.length;i++) {
    goog.debug.entryPointRegistry.refList_[i](transformer)
  }
};
goog.debug.entryPointRegistry.unmonitorAllIfPossible = function(monitor) {
  for(var transformer = goog.bind(monitor.unwrap, monitor), i = 0;i < goog.debug.entryPointRegistry.refList_.length;i++) {
    goog.debug.entryPointRegistry.refList_[i](transformer)
  }
};goog.debug.errorHandlerWeakDep = {protectEntryPoint:function(fn) {
  return fn
}};goog.iter = {};
goog.iter.StopIteration = "StopIteration" in goog.global ? goog.global.StopIteration : Error("StopIteration");
goog.iter.Iterator = function() {
};
goog.iter.Iterator.prototype.next = function() {
  throw goog.iter.StopIteration;
};
goog.iter.Iterator.prototype.__iterator__ = function() {
  return this
};
goog.iter.toIterator = function(iterable) {
  if(iterable instanceof goog.iter.Iterator) {
    return iterable
  }
  if(typeof iterable.__iterator__ == "function") {
    return iterable.__iterator__(false)
  }
  if(goog.isArrayLike(iterable)) {
    var i = 0, newIter = new goog.iter.Iterator;
    newIter.next = function() {
      for(;;) {
        if(i >= iterable.length) {
          throw goog.iter.StopIteration;
        }
        if(i in iterable) {
          return iterable[i++]
        }else {
          i++
        }
      }
    };
    return newIter
  }
  throw Error("Not implemented");
};
goog.iter.forEach = function(iterable, f, opt_obj) {
  if(goog.isArrayLike(iterable)) {
    try {
      goog.array.forEach(iterable, f, opt_obj)
    }catch(ex) {
      if(ex !== goog.iter.StopIteration) {
        throw ex;
      }
    }
  }else {
    iterable = goog.iter.toIterator(iterable);
    try {
      for(;;) {
        f.call(opt_obj, iterable.next(), undefined, iterable)
      }
    }catch(ex$$0) {
      if(ex$$0 !== goog.iter.StopIteration) {
        throw ex$$0;
      }
    }
  }
};
goog.iter.filter = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  var newIter = new goog.iter.Iterator;
  newIter.next = function() {
    for(;;) {
      var val = iterable.next();
      if(f.call(opt_obj, val, undefined, iterable)) {
        return val
      }
    }
  };
  return newIter
};
goog.iter.range = function(startOrStop, opt_stop, opt_step) {
  var start = 0, stop = startOrStop, step = opt_step || 1;
  if(arguments.length > 1) {
    start = startOrStop;
    stop = opt_stop
  }
  if(step == 0) {
    throw Error("Range step argument must not be zero");
  }
  var newIter = new goog.iter.Iterator;
  newIter.next = function() {
    if(step > 0 && start >= stop || step < 0 && start <= stop) {
      throw goog.iter.StopIteration;
    }
    var rv = start;
    start += step;
    return rv
  };
  return newIter
};
goog.iter.join = function(iterable, deliminator) {
  return goog.iter.toArray(iterable).join(deliminator)
};
goog.iter.map = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  var newIter = new goog.iter.Iterator;
  newIter.next = function() {
    for(;;) {
      var val = iterable.next();
      return f.call(opt_obj, val, undefined, iterable)
    }
  };
  return newIter
};
goog.iter.reduce = function(iterable, f, val$$0, opt_obj) {
  var rval = val$$0;
  goog.iter.forEach(iterable, function(val) {
    rval = f.call(opt_obj, rval, val)
  });
  return rval
};
goog.iter.some = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  try {
    for(;;) {
      if(f.call(opt_obj, iterable.next(), undefined, iterable)) {
        return true
      }
    }
  }catch(ex) {
    if(ex !== goog.iter.StopIteration) {
      throw ex;
    }
  }
  return false
};
goog.iter.every = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  try {
    for(;;) {
      if(!f.call(opt_obj, iterable.next(), undefined, iterable)) {
        return false
      }
    }
  }catch(ex) {
    if(ex !== goog.iter.StopIteration) {
      throw ex;
    }
  }
  return true
};
goog.iter.chain = function() {
  var args = arguments, length = args.length, i = 0, newIter = new goog.iter.Iterator;
  newIter.next = function() {
    try {
      if(i >= length) {
        throw goog.iter.StopIteration;
      }
      var current = goog.iter.toIterator(args[i]);
      return current.next()
    }catch(ex) {
      if(ex !== goog.iter.StopIteration || i >= length) {
        throw ex;
      }else {
        i++;
        return this.next()
      }
    }
  };
  return newIter
};
goog.iter.dropWhile = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  var newIter = new goog.iter.Iterator, dropping = true;
  newIter.next = function() {
    for(;;) {
      var val = iterable.next();
      if(!(dropping && f.call(opt_obj, val, undefined, iterable))) {
        dropping = false;
        return val
      }
    }
  };
  return newIter
};
goog.iter.takeWhile = function(iterable, f, opt_obj) {
  iterable = goog.iter.toIterator(iterable);
  var newIter = new goog.iter.Iterator, taking = true;
  newIter.next = function() {
    for(;;) {
      if(taking) {
        var val = iterable.next();
        if(f.call(opt_obj, val, undefined, iterable)) {
          return val
        }else {
          taking = false
        }
      }else {
        throw goog.iter.StopIteration;
      }
    }
  };
  return newIter
};
goog.iter.toArray = function(iterable) {
  if(goog.isArrayLike(iterable)) {
    return goog.array.toArray(iterable)
  }
  iterable = goog.iter.toIterator(iterable);
  var array = [];
  goog.iter.forEach(iterable, function(val) {
    array.push(val)
  });
  return array
};
goog.iter.equals = function(iterable1, iterable2) {
  iterable1 = goog.iter.toIterator(iterable1);
  iterable2 = goog.iter.toIterator(iterable2);
  var b1, b2;
  try {
    for(;;) {
      b1 = b2 = false;
      var val1 = iterable1.next();
      b1 = true;
      var val2 = iterable2.next();
      b2 = true;
      if(val1 != val2) {
        return false
      }
    }
  }catch(ex) {
    if(ex !== goog.iter.StopIteration) {
      throw ex;
    }else {
      if(b1 && !b2) {
        return false
      }
      if(!b2) {
        try {
          iterable2.next();
          return false
        }catch(ex1) {
          if(ex1 !== goog.iter.StopIteration) {
            throw ex1;
          }
          return true
        }
      }
    }
  }
  return false
};
goog.iter.nextOrValue = function(iterable, defaultValue) {
  try {
    return goog.iter.toIterator(iterable).next()
  }catch(e) {
    if(e != goog.iter.StopIteration) {
      throw e;
    }
    return defaultValue
  }
};goog.structs = {};
goog.structs.getCount = function(col) {
  if(typeof col.getCount == "function") {
    return col.getCount()
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return col.length
  }
  return goog.object.getCount(col)
};
goog.structs.getValues = function(col) {
  if(typeof col.getValues == "function") {
    return col.getValues()
  }
  if(goog.isString(col)) {
    return col.split("")
  }
  if(goog.isArrayLike(col)) {
    for(var rv = [], l = col.length, i = 0;i < l;i++) {
      rv.push(col[i])
    }
    return rv
  }
  return goog.object.getValues(col)
};
goog.structs.getKeys = function(col) {
  if(typeof col.getKeys == "function") {
    return col.getKeys()
  }
  if(typeof col.getValues != "function") {
    if(goog.isArrayLike(col) || goog.isString(col)) {
      for(var rv = [], l = col.length, i = 0;i < l;i++) {
        rv.push(i)
      }
      return rv
    }
    return goog.object.getKeys(col)
  }
};
goog.structs.contains = function(col, val) {
  if(typeof col.contains == "function") {
    return col.contains(val)
  }
  if(typeof col.containsValue == "function") {
    return col.containsValue(val)
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.contains(col, val)
  }
  return goog.object.containsValue(col, val)
};
goog.structs.isEmpty = function(col) {
  if(typeof col.isEmpty == "function") {
    return col.isEmpty()
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.isEmpty(col)
  }
  return goog.object.isEmpty(col)
};
goog.structs.clear = function(col) {
  if(typeof col.clear == "function") {
    col.clear()
  }else {
    goog.isArrayLike(col) ? goog.array.clear(col) : goog.object.clear(col)
  }
};
goog.structs.forEach = function(col, f, opt_obj) {
  if(typeof col.forEach == "function") {
    col.forEach(f, opt_obj)
  }else {
    if(goog.isArrayLike(col) || goog.isString(col)) {
      goog.array.forEach(col, f, opt_obj)
    }else {
      for(var keys = goog.structs.getKeys(col), values = goog.structs.getValues(col), l = values.length, i = 0;i < l;i++) {
        f.call(opt_obj, values[i], keys && keys[i], col)
      }
    }
  }
};
goog.structs.filter = function(col, f, opt_obj) {
  if(typeof col.filter == "function") {
    return col.filter(f, opt_obj)
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.filter(col, f, opt_obj)
  }
  var rv, keys = goog.structs.getKeys(col), values = goog.structs.getValues(col), l = values.length;
  if(keys) {
    rv = {};
    for(var i = 0;i < l;i++) {
      if(f.call(opt_obj, values[i], keys[i], col)) {
        rv[keys[i]] = values[i]
      }
    }
  }else {
    rv = [];
    for(i = 0;i < l;i++) {
      f.call(opt_obj, values[i], undefined, col) && rv.push(values[i])
    }
  }
  return rv
};
goog.structs.map = function(col, f, opt_obj) {
  if(typeof col.map == "function") {
    return col.map(f, opt_obj)
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.map(col, f, opt_obj)
  }
  var rv, keys = goog.structs.getKeys(col), values = goog.structs.getValues(col), l = values.length;
  if(keys) {
    rv = {};
    for(var i = 0;i < l;i++) {
      rv[keys[i]] = f.call(opt_obj, values[i], keys[i], col)
    }
  }else {
    rv = [];
    for(i = 0;i < l;i++) {
      rv[i] = f.call(opt_obj, values[i], undefined, col)
    }
  }
  return rv
};
goog.structs.some = function(col, f, opt_obj) {
  if(typeof col.some == "function") {
    return col.some(f, opt_obj)
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.some(col, f, opt_obj)
  }
  for(var keys = goog.structs.getKeys(col), values = goog.structs.getValues(col), l = values.length, i = 0;i < l;i++) {
    if(f.call(opt_obj, values[i], keys && keys[i], col)) {
      return true
    }
  }
  return false
};
goog.structs.every = function(col, f, opt_obj) {
  if(typeof col.every == "function") {
    return col.every(f, opt_obj)
  }
  if(goog.isArrayLike(col) || goog.isString(col)) {
    return goog.array.every(col, f, opt_obj)
  }
  for(var keys = goog.structs.getKeys(col), values = goog.structs.getValues(col), l = values.length, i = 0;i < l;i++) {
    if(!f.call(opt_obj, values[i], keys && keys[i], col)) {
      return false
    }
  }
  return true
};goog.structs.Map = function(opt_map) {
  this.map_ = {};
  this.keys_ = [];
  var argLength = arguments.length;
  if(argLength > 1) {
    if(argLength % 2) {
      throw Error("Uneven number of arguments");
    }
    for(var i = 0;i < argLength;i += 2) {
      this.set(arguments[i], arguments[i + 1])
    }
  }else {
    opt_map && this.addAll(opt_map)
  }
};
goog.structs.Map.prototype.count_ = 0;
goog.structs.Map.prototype.version_ = 0;
goog.structs.Map.prototype.getCount = function() {
  return this.count_
};
goog.structs.Map.prototype.getValues = function() {
  this.cleanupKeysArray_();
  for(var rv = [], i = 0;i < this.keys_.length;i++) {
    var key = this.keys_[i];
    rv.push(this.map_[key])
  }
  return rv
};
goog.structs.Map.prototype.getKeys = function() {
  this.cleanupKeysArray_();
  return this.keys_.concat()
};
goog.structs.Map.prototype.containsKey = function(key) {
  return goog.structs.Map.hasKey_(this.map_, key)
};
goog.structs.Map.prototype.containsValue = function(val) {
  for(var i = 0;i < this.keys_.length;i++) {
    var key = this.keys_[i];
    if(goog.structs.Map.hasKey_(this.map_, key) && this.map_[key] == val) {
      return true
    }
  }
  return false
};
goog.structs.Map.prototype.equals = function(otherMap, opt_equalityFn) {
  if(this === otherMap) {
    return true
  }
  if(this.count_ != otherMap.getCount()) {
    return false
  }
  var equalityFn = opt_equalityFn || goog.structs.Map.defaultEquals;
  this.cleanupKeysArray_();
  for(var key, i = 0;key = this.keys_[i];i++) {
    if(!equalityFn(this.get(key), otherMap.get(key))) {
      return false
    }
  }
  return true
};
goog.structs.Map.defaultEquals = function(a, b) {
  return a === b
};
goog.structs.Map.prototype.isEmpty = function() {
  return this.count_ == 0
};
goog.structs.Map.prototype.clear = function() {
  this.map_ = {};
  this.version_ = this.count_ = this.keys_.length = 0
};
goog.structs.Map.prototype.remove = function(key) {
  if(goog.structs.Map.hasKey_(this.map_, key)) {
    delete this.map_[key];
    this.count_--;
    this.version_++;
    this.keys_.length > 2 * this.count_ && this.cleanupKeysArray_();
    return true
  }
  return false
};
goog.structs.Map.prototype.cleanupKeysArray_ = function() {
  if(this.count_ != this.keys_.length) {
    for(var srcIndex = 0, destIndex = 0;srcIndex < this.keys_.length;) {
      var key = this.keys_[srcIndex];
      if(goog.structs.Map.hasKey_(this.map_, key)) {
        this.keys_[destIndex++] = key
      }
      srcIndex++
    }
    this.keys_.length = destIndex
  }
  if(this.count_ != this.keys_.length) {
    var seen = {};
    for(destIndex = srcIndex = 0;srcIndex < this.keys_.length;) {
      key = this.keys_[srcIndex];
      if(!goog.structs.Map.hasKey_(seen, key)) {
        this.keys_[destIndex++] = key;
        seen[key] = 1
      }
      srcIndex++
    }
    this.keys_.length = destIndex
  }
};
goog.structs.Map.prototype.get = function(key, opt_val) {
  if(goog.structs.Map.hasKey_(this.map_, key)) {
    return this.map_[key]
  }
  return opt_val
};
goog.structs.Map.prototype.set = function(key, value) {
  if(!goog.structs.Map.hasKey_(this.map_, key)) {
    this.count_++;
    this.keys_.push(key);
    this.version_++
  }
  this.map_[key] = value
};
goog.structs.Map.prototype.addAll = function(map) {
  var keys, values;
  if(map instanceof goog.structs.Map) {
    keys = map.getKeys();
    values = map.getValues()
  }else {
    keys = goog.object.getKeys(map);
    values = goog.object.getValues(map)
  }
  for(var i = 0;i < keys.length;i++) {
    this.set(keys[i], values[i])
  }
};
goog.structs.Map.prototype.clone = function() {
  return new goog.structs.Map(this)
};
goog.structs.Map.prototype.transpose = function() {
  for(var transposed = new goog.structs.Map, i = 0;i < this.keys_.length;i++) {
    var key = this.keys_[i], value = this.map_[key];
    transposed.set(value, key)
  }
  return transposed
};
goog.structs.Map.prototype.__iterator__ = function(opt_keys) {
  this.cleanupKeysArray_();
  var i = 0, keys = this.keys_, map = this.map_, version = this.version_, selfObj = this, newIter = new goog.iter.Iterator;
  newIter.next = function() {
    for(;;) {
      if(version != selfObj.version_) {
        throw Error("The map has changed since the iterator was created");
      }
      if(i >= keys.length) {
        throw goog.iter.StopIteration;
      }
      var key = keys[i++];
      return opt_keys ? key : map[key]
    }
  };
  return newIter
};
goog.structs.Map.hasKey_ = function(obj, key) {
  return Object.prototype.hasOwnProperty.call(obj, key)
};goog.structs.Set = function(opt_values) {
  this.map_ = new goog.structs.Map;
  opt_values && this.addAll(opt_values)
};
goog.structs.Set.getKey_ = function(val) {
  var type = typeof val;
  return type == "object" && val || type == "function" ? "o" + goog.getUid(val) : type.substr(0, 1) + val
};
goog.structs.Set.prototype.getCount = function() {
  return this.map_.getCount()
};
goog.structs.Set.prototype.add = function(element) {
  this.map_.set(goog.structs.Set.getKey_(element), element)
};
goog.structs.Set.prototype.addAll = function(col) {
  for(var values = goog.structs.getValues(col), l = values.length, i = 0;i < l;i++) {
    this.add(values[i])
  }
};
goog.structs.Set.prototype.removeAll = function(col) {
  for(var values = goog.structs.getValues(col), l = values.length, i = 0;i < l;i++) {
    this.remove(values[i])
  }
};
goog.structs.Set.prototype.remove = function(element) {
  return this.map_.remove(goog.structs.Set.getKey_(element))
};
goog.structs.Set.prototype.clear = function() {
  this.map_.clear()
};
goog.structs.Set.prototype.isEmpty = function() {
  return this.map_.isEmpty()
};
goog.structs.Set.prototype.contains = function(element) {
  return this.map_.containsKey(goog.structs.Set.getKey_(element))
};
goog.structs.Set.prototype.getValues = function() {
  return this.map_.getValues()
};
goog.structs.Set.prototype.clone = function() {
  return new goog.structs.Set(this)
};
goog.structs.Set.prototype.equals = function(col) {
  return this.getCount() == goog.structs.getCount(col) && this.isSubsetOf(col)
};
goog.structs.Set.prototype.isSubsetOf = function(col) {
  var colCount = goog.structs.getCount(col);
  if(this.getCount() > colCount) {
    return false
  }
  if(!(col instanceof goog.structs.Set) && colCount > 5) {
    col = new goog.structs.Set(col)
  }
  return goog.structs.every(this, function(value) {
    return goog.structs.contains(col, value)
  })
};
goog.structs.Set.prototype.__iterator__ = function() {
  return this.map_.__iterator__(false)
};goog.debug.catchErrors = function(logFunc, opt_cancel, opt_target) {
  var target = opt_target || goog.global, oldErrorHandler = target.onerror;
  target.onerror = function(message, url, line) {
    oldErrorHandler && oldErrorHandler(message, url, line);
    logFunc({message:message, fileName:url, line:line});
    return Boolean(opt_cancel)
  }
};
goog.debug.expose = function(obj, opt_showFn) {
  if(typeof obj == "undefined") {
    return"undefined"
  }
  if(obj == null) {
    return"NULL"
  }
  var str = [], x;
  for(x in obj) {
    if(!(!opt_showFn && goog.isFunction(obj[x]))) {
      var s = x + " = ";
      try {
        s += obj[x]
      }catch(e) {
        s += "*** " + e + " ***"
      }
      str.push(s)
    }
  }
  return str.join("\n")
};
goog.debug.deepExpose = function(obj$$0, opt_showFn) {
  var previous = new goog.structs.Set, str = [], helper = function(obj, space) {
    var nestspace = space + "  ";
    try {
      if(goog.isDef(obj)) {
        if(goog.isNull(obj)) {
          str.push("NULL")
        }else {
          if(goog.isString(obj)) {
            str.push('"' + obj.replace(/\n/g, "\n" + space) + '"')
          }else {
            if(goog.isFunction(obj)) {
              str.push(String(obj).replace(/\n/g, "\n" + space))
            }else {
              if(goog.isObject(obj)) {
                if(previous.contains(obj)) {
                  str.push("*** reference loop detected ***")
                }else {
                  previous.add(obj);
                  str.push("{");
                  for(var x in obj) {
                    if(!(!opt_showFn && goog.isFunction(obj[x]))) {
                      str.push("\n");
                      str.push(nestspace);
                      str.push(x + " = ");
                      helper(obj[x], nestspace)
                    }
                  }
                  str.push("\n" + space + "}")
                }
              }else {
                str.push(obj)
              }
            }
          }
        }
      }else {
        str.push("undefined")
      }
    }catch(e) {
      str.push("*** " + e + " ***")
    }
  };
  helper(obj$$0, "");
  return str.join("")
};
goog.debug.exposeArray = function(arr) {
  for(var str = [], i = 0;i < arr.length;i++) {
    goog.isArray(arr[i]) ? str.push(goog.debug.exposeArray(arr[i])) : str.push(arr[i])
  }
  return"[ " + str.join(", ") + " ]"
};
goog.debug.exposeException = function(err, opt_fn) {
  try {
    var e = goog.debug.normalizeErrorObject(err), error = "Message: " + goog.string.htmlEscape(e.message) + '\nUrl: <a href="view-source:' + e.fileName + '" target="_new">' + e.fileName + "</a>\nLine: " + e.lineNumber + "\n\nBrowser stack:\n" + goog.string.htmlEscape(e.stack + "-> ") + "[end]\n\nJS stack traversal:\n" + goog.string.htmlEscape(goog.debug.getStacktrace(opt_fn) + "-> ");
    return error
  }catch(e2) {
    return"Exception trying to expose exception! You win, we lose. " + e2
  }
};
goog.debug.normalizeErrorObject = function(err) {
  var href = goog.getObjectByName("window.location.href");
  return typeof err == "string" ? {message:err, name:"Unknown error", lineNumber:"Not available", fileName:href, stack:"Not available"} : !err.lineNumber || !err.fileName || !err.stack ? {message:err.message, name:err.name, lineNumber:err.lineNumber || err.line || "Not available", fileName:err.fileName || err.filename || err.sourceURL || href, stack:err.stack || "Not available"} : err
};
goog.debug.enhanceError = function(err, opt_message) {
  var error = typeof err == "string" ? Error(err) : err;
  if(!error.stack) {
    error.stack = goog.debug.getStacktrace(arguments.callee.caller)
  }
  if(opt_message) {
    for(var x = 0;error["message" + x];) {
      ++x
    }
    error["message" + x] = String(opt_message)
  }
  return error
};
goog.debug.getStacktraceSimple = function(opt_depth) {
  for(var sb = [], fn = arguments.callee.caller, depth = 0;fn && (!opt_depth || depth < opt_depth);) {
    sb.push(goog.debug.getFunctionName(fn));
    sb.push("()\n");
    try {
      fn = fn.caller
    }catch(e) {
      sb.push("[exception trying to get caller]\n");
      break
    }
    depth++;
    if(depth >= goog.debug.MAX_STACK_DEPTH) {
      sb.push("[...long stack...]");
      break
    }
  }
  opt_depth && depth >= opt_depth ? sb.push("[...reached max depth limit...]") : sb.push("[end]");
  return sb.join("")
};
goog.debug.MAX_STACK_DEPTH = 50;
goog.debug.getStacktrace = function(opt_fn) {
  return goog.debug.getStacktraceHelper_(opt_fn || arguments.callee.caller, [])
};
goog.debug.getStacktraceHelper_ = function(fn, visited) {
  var sb = [];
  if(goog.array.contains(visited, fn)) {
    sb.push("[...circular reference...]")
  }else {
    if(fn && visited.length < goog.debug.MAX_STACK_DEPTH) {
      sb.push(goog.debug.getFunctionName(fn) + "(");
      for(var args = fn.arguments, i = 0;i < args.length;i++) {
        i > 0 && sb.push(", ");
        var argDesc, arg = args[i];
        switch(typeof arg) {
          case "object":
            argDesc = arg ? "object" : "null";
            break;
          case "string":
            argDesc = arg;
            break;
          case "number":
            argDesc = String(arg);
            break;
          case "boolean":
            argDesc = arg ? "true" : "false";
            break;
          case "function":
            argDesc = (argDesc = goog.debug.getFunctionName(arg)) ? argDesc : "[fn]";
            break;
          default:
            argDesc = typeof arg
        }
        if(argDesc.length > 40) {
          argDesc = argDesc.substr(0, 40) + "..."
        }
        sb.push(argDesc)
      }
      visited.push(fn);
      sb.push(")\n");
      try {
        sb.push(goog.debug.getStacktraceHelper_(fn.caller, visited))
      }catch(e) {
        sb.push("[exception trying to get caller]\n")
      }
    }else {
      fn ? sb.push("[...long stack...]") : sb.push("[end]")
    }
  }
  return sb.join("")
};
goog.debug.getFunctionName = function(fn) {
  var functionSource = String(fn);
  if(!goog.debug.fnNameCache_[functionSource]) {
    var matches = /function ([^\(]+)/.exec(functionSource);
    if(matches) {
      var method = matches[1];
      goog.debug.fnNameCache_[functionSource] = method
    }else {
      goog.debug.fnNameCache_[functionSource] = "[Anonymous]"
    }
  }
  return goog.debug.fnNameCache_[functionSource]
};
goog.debug.makeWhitespaceVisible = function(string) {
  return string.replace(/ /g, "[_]").replace(/\f/g, "[f]").replace(/\n/g, "[n]\n").replace(/\r/g, "[r]").replace(/\t/g, "[t]")
};
goog.debug.fnNameCache_ = {};goog.debug.LogRecord = function(level, msg, loggerName, opt_time, opt_sequenceNumber) {
  this.reset(level, msg, loggerName, opt_time, opt_sequenceNumber)
};
goog.debug.LogRecord.prototype.sequenceNumber_ = 0;
goog.debug.LogRecord.prototype.exception_ = null;
goog.debug.LogRecord.prototype.exceptionText_ = null;
goog.debug.LogRecord.ENABLE_SEQUENCE_NUMBERS = true;
goog.debug.LogRecord.nextSequenceNumber_ = 0;
goog.debug.LogRecord.prototype.reset = function(level, msg, loggerName, opt_time, opt_sequenceNumber) {
  if(goog.debug.LogRecord.ENABLE_SEQUENCE_NUMBERS) {
    this.sequenceNumber_ = typeof opt_sequenceNumber == "number" ? opt_sequenceNumber : goog.debug.LogRecord.nextSequenceNumber_++
  }
  this.time_ = opt_time || goog.now();
  this.level_ = level;
  this.msg_ = msg;
  this.loggerName_ = loggerName;
  delete this.exception_;
  delete this.exceptionText_
};
goog.debug.LogRecord.prototype.setException = function(exception) {
  this.exception_ = exception
};
goog.debug.LogRecord.prototype.setExceptionText = function(text) {
  this.exceptionText_ = text
};
goog.debug.LogRecord.prototype.setLevel = function(level) {
  this.level_ = level
};goog.debug.LogBuffer = function() {
  goog.asserts.assert(goog.debug.LogBuffer.isBufferingEnabled(), "Cannot use goog.debug.LogBuffer without defining goog.debug.LogBuffer.CAPACITY.");
  this.clear()
};
goog.debug.LogBuffer.getInstance = function() {
  if(!goog.debug.LogBuffer.instance_) {
    goog.debug.LogBuffer.instance_ = new goog.debug.LogBuffer
  }
  return goog.debug.LogBuffer.instance_
};
goog.debug.LogBuffer.CAPACITY = 0;
goog.debug.LogBuffer.prototype.addRecord = function(level, msg, loggerName) {
  var curIndex = (this.curIndex_ + 1) % goog.debug.LogBuffer.CAPACITY;
  this.curIndex_ = curIndex;
  if(this.isFull_) {
    var ret = this.buffer_[curIndex];
    ret.reset(level, msg, loggerName);
    return ret
  }
  this.isFull_ = curIndex == goog.debug.LogBuffer.CAPACITY - 1;
  return this.buffer_[curIndex] = new goog.debug.LogRecord(level, msg, loggerName)
};
goog.debug.LogBuffer.isBufferingEnabled = function() {
  return goog.debug.LogBuffer.CAPACITY > 0
};
goog.debug.LogBuffer.prototype.clear = function() {
  this.buffer_ = Array(goog.debug.LogBuffer.CAPACITY);
  this.curIndex_ = -1;
  this.isFull_ = false
};goog.debug.Logger = function(name) {
  this.name_ = name
};
goog.debug.Logger.prototype.parent_ = null;
goog.debug.Logger.prototype.level_ = null;
goog.debug.Logger.prototype.children_ = null;
goog.debug.Logger.prototype.handlers_ = null;
goog.debug.Logger.ENABLE_HIERARCHY = true;
if(!goog.debug.Logger.ENABLE_HIERARCHY) {
  goog.debug.Logger.rootHandlers_ = []
}
goog.debug.Logger.Level = function(name, value) {
  this.name = name;
  this.value = value
};
goog.debug.Logger.Level.prototype.toString = function() {
  return this.name
};
goog.debug.Logger.Level.OFF = new goog.debug.Logger.Level("OFF", Infinity);
goog.debug.Logger.Level.SHOUT = new goog.debug.Logger.Level("SHOUT", 1200);
goog.debug.Logger.Level.SEVERE = new goog.debug.Logger.Level("SEVERE", 1E3);
goog.debug.Logger.Level.WARNING = new goog.debug.Logger.Level("WARNING", 900);
goog.debug.Logger.Level.INFO = new goog.debug.Logger.Level("INFO", 800);
goog.debug.Logger.Level.CONFIG = new goog.debug.Logger.Level("CONFIG", 700);
goog.debug.Logger.Level.FINE = new goog.debug.Logger.Level("FINE", 500);
goog.debug.Logger.Level.FINER = new goog.debug.Logger.Level("FINER", 400);
goog.debug.Logger.Level.FINEST = new goog.debug.Logger.Level("FINEST", 300);
goog.debug.Logger.Level.ALL = new goog.debug.Logger.Level("ALL", 0);
goog.debug.Logger.Level.PREDEFINED_LEVELS = [goog.debug.Logger.Level.OFF, goog.debug.Logger.Level.SHOUT, goog.debug.Logger.Level.SEVERE, goog.debug.Logger.Level.WARNING, goog.debug.Logger.Level.INFO, goog.debug.Logger.Level.CONFIG, goog.debug.Logger.Level.FINE, goog.debug.Logger.Level.FINER, goog.debug.Logger.Level.FINEST, goog.debug.Logger.Level.ALL];
goog.debug.Logger.Level.predefinedLevelsCache_ = null;
goog.debug.Logger.Level.createPredefinedLevelsCache_ = function() {
  goog.debug.Logger.Level.predefinedLevelsCache_ = {};
  for(var i = 0, level;level = goog.debug.Logger.Level.PREDEFINED_LEVELS[i];i++) {
    goog.debug.Logger.Level.predefinedLevelsCache_[level.value] = level;
    goog.debug.Logger.Level.predefinedLevelsCache_[level.name] = level
  }
};
goog.debug.Logger.Level.getPredefinedLevel = function(name) {
  goog.debug.Logger.Level.predefinedLevelsCache_ || goog.debug.Logger.Level.createPredefinedLevelsCache_();
  return goog.debug.Logger.Level.predefinedLevelsCache_[name] || null
};
goog.debug.Logger.Level.getPredefinedLevelByValue = function(value) {
  goog.debug.Logger.Level.predefinedLevelsCache_ || goog.debug.Logger.Level.createPredefinedLevelsCache_();
  if(value in goog.debug.Logger.Level.predefinedLevelsCache_) {
    return goog.debug.Logger.Level.predefinedLevelsCache_[value]
  }
  for(var i = 0;i < goog.debug.Logger.Level.PREDEFINED_LEVELS.length;++i) {
    var level = goog.debug.Logger.Level.PREDEFINED_LEVELS[i];
    if(level.value <= value) {
      return level
    }
  }
  return null
};
goog.debug.Logger.getLogger = function(name) {
  return goog.debug.LogManager.getLogger(name)
};
goog.debug.Logger.prototype.getParent = function() {
  return this.parent_
};
goog.debug.Logger.prototype.getChildren = function() {
  if(!this.children_) {
    this.children_ = {}
  }
  return this.children_
};
goog.debug.Logger.prototype.setLevel = function(level) {
  if(goog.debug.Logger.ENABLE_HIERARCHY) {
    this.level_ = level
  }else {
    goog.asserts.assert(!this.name_, "Cannot call setLevel() on a non-root logger when goog.debug.Logger.ENABLE_HIERARCHY is false.");
    goog.debug.Logger.rootLevel_ = level
  }
};
goog.debug.Logger.prototype.getEffectiveLevel = function() {
  if(!goog.debug.Logger.ENABLE_HIERARCHY) {
    return goog.debug.Logger.rootLevel_
  }
  if(this.level_) {
    return this.level_
  }
  if(this.parent_) {
    return this.parent_.getEffectiveLevel()
  }
  goog.asserts.fail("Root logger has no level set.");
  return null
};
goog.debug.Logger.prototype.isLoggable = function(level) {
  return level.value >= this.getEffectiveLevel().value
};
goog.debug.Logger.prototype.log = function(level, msg, opt_exception) {
  this.isLoggable(level) && this.doLogRecord_(this.getLogRecord(level, msg, opt_exception))
};
goog.debug.Logger.prototype.getLogRecord = function(level, msg, opt_exception) {
  var logRecord = goog.debug.LogBuffer.isBufferingEnabled() ? goog.debug.LogBuffer.getInstance().addRecord(level, msg, this.name_) : new goog.debug.LogRecord(level, String(msg), this.name_);
  if(opt_exception) {
    logRecord.setException(opt_exception);
    logRecord.setExceptionText(goog.debug.exposeException(opt_exception, arguments.callee.caller))
  }
  return logRecord
};
goog.debug.Logger.prototype.severe = function(msg, opt_exception) {
  this.log(goog.debug.Logger.Level.SEVERE, msg, opt_exception)
};
goog.debug.Logger.prototype.warning = function(msg, opt_exception) {
  this.log(goog.debug.Logger.Level.WARNING, msg, opt_exception)
};
goog.debug.Logger.prototype.fine = function(msg, opt_exception) {
  this.log(goog.debug.Logger.Level.FINE, msg, opt_exception)
};
goog.debug.Logger.prototype.finest = function(msg, opt_exception) {
  this.log(goog.debug.Logger.Level.FINEST, msg, opt_exception)
};
goog.debug.Logger.prototype.doLogRecord_ = function(logRecord) {
  if(goog.debug.Logger.ENABLE_HIERARCHY) {
    for(var target = this;target;) {
      target.callPublish_(logRecord);
      target = target.getParent()
    }
  }else {
    for(var i = 0, handler;handler = goog.debug.Logger.rootHandlers_[i++];) {
      handler(logRecord)
    }
  }
};
goog.debug.Logger.prototype.callPublish_ = function(logRecord) {
  if(this.handlers_) {
    for(var i = 0, handler;handler = this.handlers_[i];i++) {
      handler(logRecord)
    }
  }
};
goog.debug.Logger.prototype.setParent_ = function(parent) {
  this.parent_ = parent
};
goog.debug.Logger.prototype.addChild_ = function(name, logger) {
  this.getChildren()[name] = logger
};
goog.debug.LogManager = {};
goog.debug.LogManager.loggers_ = {};
goog.debug.LogManager.rootLogger_ = null;
goog.debug.LogManager.initialize = function() {
  if(!goog.debug.LogManager.rootLogger_) {
    goog.debug.LogManager.rootLogger_ = new goog.debug.Logger("");
    goog.debug.LogManager.loggers_[""] = goog.debug.LogManager.rootLogger_;
    goog.debug.LogManager.rootLogger_.setLevel(goog.debug.Logger.Level.CONFIG)
  }
};
goog.debug.LogManager.getLoggers = function() {
  return goog.debug.LogManager.loggers_
};
goog.debug.LogManager.getRoot = function() {
  goog.debug.LogManager.initialize();
  return goog.debug.LogManager.rootLogger_
};
goog.debug.LogManager.getLogger = function(name) {
  goog.debug.LogManager.initialize();
  var ret = goog.debug.LogManager.loggers_[name];
  return ret || goog.debug.LogManager.createLogger_(name)
};
goog.debug.LogManager.createFunctionForCatchErrors = function(opt_logger) {
  return function(info) {
    var logger = opt_logger || goog.debug.LogManager.getRoot();
    logger.severe("Error: " + info.message + " (" + info.fileName + " @ Line: " + info.line + ")")
  }
};
goog.debug.LogManager.createLogger_ = function(name) {
  var logger = new goog.debug.Logger(name);
  if(goog.debug.Logger.ENABLE_HIERARCHY) {
    var lastDotIndex = name.lastIndexOf("."), parentName = name.substr(0, lastDotIndex), leafName = name.substr(lastDotIndex + 1), parentLogger = goog.debug.LogManager.getLogger(parentName);
    parentLogger.addChild_(leafName, logger);
    logger.setParent_(parentLogger)
  }
  return goog.debug.LogManager.loggers_[name] = logger
};goog.Disposable = function() {
};
goog.Disposable.prototype.disposed_ = false;
goog.Disposable.prototype.dispose = function() {
  if(!this.disposed_) {
    this.disposed_ = true;
    this.disposeInternal()
  }
};
goog.Disposable.prototype.disposeInternal = function() {
};
goog.dispose = function(obj) {
  obj && typeof obj.dispose == "function" && obj.dispose()
};goog.events = {};
goog.events.BrowserFeature = {HAS_W3C_BUTTON:!goog.userAgent.IE || goog.userAgent.isVersion("9"), SET_KEY_CODE_TO_PREVENT_DEFAULT:goog.userAgent.IE && !goog.userAgent.isVersion("8")};goog.events.Event = function(type, opt_target) {
  this.type = type;
  this.currentTarget = this.target = opt_target
};
goog.inherits(goog.events.Event, goog.Disposable);
goog.events.Event.prototype.disposeInternal = function() {
  delete this.type;
  delete this.target;
  delete this.currentTarget
};
goog.events.Event.prototype.propagationStopped_ = false;
goog.events.Event.prototype.returnValue_ = true;
goog.events.Event.prototype.stopPropagation = function() {
  this.propagationStopped_ = true
};
goog.events.Event.prototype.preventDefault = function() {
  this.returnValue_ = false
};
goog.events.Event.stopPropagation = function(e) {
  e.stopPropagation()
};
goog.events.Event.preventDefault = function(e) {
  e.preventDefault()
};goog.events.EventType = {CLICK:"click", DBLCLICK:"dblclick", MOUSEDOWN:"mousedown", MOUSEUP:"mouseup", MOUSEOVER:"mouseover", MOUSEOUT:"mouseout", MOUSEMOVE:"mousemove", SELECTSTART:"selectstart", KEYPRESS:"keypress", KEYDOWN:"keydown", KEYUP:"keyup", BLUR:"blur", FOCUS:"focus", DEACTIVATE:"deactivate", FOCUSIN:goog.userAgent.IE ? "focusin" : "DOMFocusIn", FOCUSOUT:goog.userAgent.IE ? "focusout" : "DOMFocusOut", CHANGE:"change", SELECT:"select", SUBMIT:"submit", INPUT:"input", PROPERTYCHANGE:"propertychange", 
DRAGSTART:"dragstart", DRAGENTER:"dragenter", DRAGOVER:"dragover", DRAGLEAVE:"dragleave", DROP:"drop", TOUCHSTART:"touchstart", TOUCHMOVE:"touchmove", TOUCHEND:"touchend", TOUCHCANCEL:"touchcancel", CONTEXTMENU:"contextmenu", ERROR:"error", HELP:"help", LOAD:"load", LOSECAPTURE:"losecapture", READYSTATECHANGE:"readystatechange", RESIZE:"resize", SCROLL:"scroll", UNLOAD:"unload", HASHCHANGE:"hashchange", POPSTATE:"popstate"};goog.events.BrowserEvent = function(opt_e, opt_currentTarget) {
  opt_e && this.init(opt_e, opt_currentTarget)
};
goog.inherits(goog.events.BrowserEvent, goog.events.Event);
goog.events.BrowserEvent.MouseButton = {LEFT:0, MIDDLE:1, RIGHT:2};
goog.events.BrowserEvent.IEButtonMap_ = [1, 4, 2];
goog.events.BrowserEvent.prototype.target = null;
goog.events.BrowserEvent.prototype.relatedTarget = null;
goog.events.BrowserEvent.prototype.offsetX = 0;
goog.events.BrowserEvent.prototype.offsetY = 0;
goog.events.BrowserEvent.prototype.clientX = 0;
goog.events.BrowserEvent.prototype.clientY = 0;
goog.events.BrowserEvent.prototype.screenX = 0;
goog.events.BrowserEvent.prototype.screenY = 0;
goog.events.BrowserEvent.prototype.button = 0;
goog.events.BrowserEvent.prototype.keyCode = 0;
goog.events.BrowserEvent.prototype.charCode = 0;
goog.events.BrowserEvent.prototype.ctrlKey = false;
goog.events.BrowserEvent.prototype.altKey = false;
goog.events.BrowserEvent.prototype.shiftKey = false;
goog.events.BrowserEvent.prototype.metaKey = false;
goog.events.BrowserEvent.prototype.platformModifierKey = false;
goog.events.BrowserEvent.prototype.event_ = null;
goog.events.BrowserEvent.prototype.init = function(e, opt_currentTarget) {
  var type = this.type = e.type;
  this.target = e.target || e.srcElement;
  this.currentTarget = opt_currentTarget;
  var relatedTarget = e.relatedTarget;
  if(relatedTarget) {
    if(goog.userAgent.GECKO) {
      try {
        relatedTarget = relatedTarget.nodeName && relatedTarget
      }catch(err) {
        relatedTarget = null
      }
    }
  }else {
    if(type == goog.events.EventType.MOUSEOVER) {
      relatedTarget = e.fromElement
    }else {
      if(type == goog.events.EventType.MOUSEOUT) {
        relatedTarget = e.toElement
      }
    }
  }
  this.relatedTarget = relatedTarget;
  this.offsetX = e.offsetX !== undefined ? e.offsetX : e.layerX;
  this.offsetY = e.offsetY !== undefined ? e.offsetY : e.layerY;
  this.clientX = e.clientX !== undefined ? e.clientX : e.pageX;
  this.clientY = e.clientY !== undefined ? e.clientY : e.pageY;
  this.screenX = e.screenX || 0;
  this.screenY = e.screenY || 0;
  this.button = e.button;
  this.keyCode = e.keyCode || 0;
  this.charCode = e.charCode || (type == "keypress" ? e.keyCode : 0);
  this.ctrlKey = e.ctrlKey;
  this.altKey = e.altKey;
  this.shiftKey = e.shiftKey;
  this.metaKey = e.metaKey;
  this.platformModifierKey = goog.userAgent.MAC ? e.metaKey : e.ctrlKey;
  this.state = e.state;
  this.event_ = e;
  delete this.returnValue_;
  delete this.propagationStopped_
};
goog.events.BrowserEvent.prototype.stopPropagation = function() {
  goog.events.BrowserEvent.superClass_.stopPropagation.call(this);
  if(this.event_.stopPropagation) {
    this.event_.stopPropagation()
  }else {
    this.event_.cancelBubble = true
  }
};
goog.events.BrowserEvent.prototype.preventDefault = function() {
  goog.events.BrowserEvent.superClass_.preventDefault.call(this);
  var be = this.event_;
  if(be.preventDefault) {
    be.preventDefault()
  }else {
    be.returnValue = false;
    if(goog.events.BrowserFeature.SET_KEY_CODE_TO_PREVENT_DEFAULT) {
      try {
        if(be.ctrlKey || be.keyCode >= 112 && be.keyCode <= 123) {
          be.keyCode = -1
        }
      }catch(ex) {
      }
    }
  }
};
goog.events.BrowserEvent.prototype.disposeInternal = function() {
  goog.events.BrowserEvent.superClass_.disposeInternal.call(this);
  this.relatedTarget = this.currentTarget = this.target = this.event_ = null
};goog.events.EventWrapper = function() {
};
goog.events.EventWrapper.prototype.listen = function() {
};
goog.events.EventWrapper.prototype.unlisten = function() {
};goog.structs.SimplePool = function(initialCount, maxCount) {
  this.maxCount_ = maxCount;
  this.freeQueue_ = [];
  this.createInitial_(initialCount)
};
goog.inherits(goog.structs.SimplePool, goog.Disposable);
goog.structs.SimplePool.prototype.createObjectFn_ = null;
goog.structs.SimplePool.prototype.disposeObjectFn_ = null;
goog.structs.SimplePool.prototype.setCreateObjectFn = function(createObjectFn) {
  this.createObjectFn_ = createObjectFn
};
goog.structs.SimplePool.prototype.getObject = function() {
  if(this.freeQueue_.length) {
    return this.freeQueue_.pop()
  }
  return this.createObject()
};
goog.structs.SimplePool.prototype.releaseObject = function(obj) {
  this.freeQueue_.length < this.maxCount_ ? this.freeQueue_.push(obj) : this.disposeObject(obj)
};
goog.structs.SimplePool.prototype.createInitial_ = function(initialCount) {
  if(initialCount > this.maxCount_) {
    throw Error("[goog.structs.SimplePool] Initial cannot be greater than max");
  }
  for(var i = 0;i < initialCount;i++) {
    this.freeQueue_.push(this.createObject())
  }
};
goog.structs.SimplePool.prototype.createObject = function() {
  return this.createObjectFn_ ? this.createObjectFn_() : {}
};
goog.structs.SimplePool.prototype.disposeObject = function(obj) {
  if(this.disposeObjectFn_) {
    this.disposeObjectFn_(obj)
  }else {
    if(goog.isObject(obj)) {
      if(goog.isFunction(obj.dispose)) {
        obj.dispose()
      }else {
        for(var i in obj) {
          delete obj[i]
        }
      }
    }
  }
};
goog.structs.SimplePool.prototype.disposeInternal = function() {
  goog.structs.SimplePool.superClass_.disposeInternal.call(this);
  for(var freeQueue = this.freeQueue_;freeQueue.length;) {
    this.disposeObject(freeQueue.pop())
  }
  delete this.freeQueue_
};goog.userAgent.jscript = {};
goog.userAgent.jscript.ASSUME_NO_JSCRIPT = false;
goog.userAgent.jscript.init_ = function() {
  var hasScriptEngine = "ScriptEngine" in goog.global;
  goog.userAgent.jscript.DETECTED_HAS_JSCRIPT_ = hasScriptEngine && goog.global.ScriptEngine() == "JScript";
  goog.userAgent.jscript.DETECTED_VERSION_ = goog.userAgent.jscript.DETECTED_HAS_JSCRIPT_ ? goog.global.ScriptEngineMajorVersion() + "." + goog.global.ScriptEngineMinorVersion() + "." + goog.global.ScriptEngineBuildVersion() : "0"
};
goog.userAgent.jscript.ASSUME_NO_JSCRIPT || goog.userAgent.jscript.init_();
goog.userAgent.jscript.HAS_JSCRIPT = goog.userAgent.jscript.ASSUME_NO_JSCRIPT ? false : goog.userAgent.jscript.DETECTED_HAS_JSCRIPT_;
goog.userAgent.jscript.VERSION = goog.userAgent.jscript.ASSUME_NO_JSCRIPT ? "0" : goog.userAgent.jscript.DETECTED_VERSION_;
goog.userAgent.jscript.isVersion = function(version) {
  return goog.string.compareVersions(goog.userAgent.jscript.VERSION, version) >= 0
};goog.events.Listener = function() {
};
goog.events.Listener.counter_ = 0;
goog.events.Listener.prototype.key = 0;
goog.events.Listener.prototype.removed = false;
goog.events.Listener.prototype.callOnce = false;
goog.events.Listener.prototype.init = function(listener, proxy, src, type, capture, opt_handler) {
  if(goog.isFunction(listener)) {
    this.isFunctionListener_ = true
  }else {
    if(listener && listener.handleEvent && goog.isFunction(listener.handleEvent)) {
      this.isFunctionListener_ = false
    }else {
      throw Error("Invalid listener argument");
    }
  }
  this.listener = listener;
  this.proxy = proxy;
  this.src = src;
  this.type = type;
  this.capture = !!capture;
  this.handler = opt_handler;
  this.callOnce = false;
  this.key = ++goog.events.Listener.counter_;
  this.removed = false
};
goog.events.Listener.prototype.handleEvent = function(eventObject) {
  if(this.isFunctionListener_) {
    return this.listener.call(this.handler || this.src, eventObject)
  }
  return this.listener.handleEvent.call(this.listener, eventObject)
};goog.events.pools = {};
(function() {
  function getObject() {
    return{count_:0, remaining_:0}
  }
  function getArray() {
    return[]
  }
  function getProxy() {
    var f = function(eventObject) {
      return proxyCallbackFunction.call(f.src, f.key, eventObject)
    };
    return f
  }
  function getListener() {
    return new goog.events.Listener
  }
  function getEvent() {
    return new goog.events.BrowserEvent
  }
  var BAD_GC = goog.userAgent.jscript.HAS_JSCRIPT && !goog.userAgent.jscript.isVersion("5.7"), proxyCallbackFunction;
  goog.events.pools.setProxyCallbackFunction = function(cb) {
    proxyCallbackFunction = cb
  };
  if(BAD_GC) {
    goog.events.pools.getObject = function() {
      return objectPool.getObject()
    };
    goog.events.pools.releaseObject = function(obj) {
      objectPool.releaseObject(obj)
    };
    goog.events.pools.getArray = function() {
      return arrayPool.getObject()
    };
    goog.events.pools.releaseArray = function(obj) {
      arrayPool.releaseObject(obj)
    };
    goog.events.pools.getProxy = function() {
      return proxyPool.getObject()
    };
    goog.events.pools.releaseProxy = function() {
      proxyPool.releaseObject(getProxy())
    };
    goog.events.pools.getListener = function() {
      return listenerPool.getObject()
    };
    goog.events.pools.releaseListener = function(obj) {
      listenerPool.releaseObject(obj)
    };
    goog.events.pools.getEvent = function() {
      return eventPool.getObject()
    };
    goog.events.pools.releaseEvent = function(obj) {
      eventPool.releaseObject(obj)
    };
    var objectPool = new goog.structs.SimplePool(0, 600);
    objectPool.setCreateObjectFn(getObject);
    var arrayPool = new goog.structs.SimplePool(0, 600);
    arrayPool.setCreateObjectFn(getArray);
    var proxyPool = new goog.structs.SimplePool(0, 600);
    proxyPool.setCreateObjectFn(getProxy);
    var listenerPool = new goog.structs.SimplePool(0, 600);
    listenerPool.setCreateObjectFn(getListener);
    var eventPool = new goog.structs.SimplePool(0, 600);
    eventPool.setCreateObjectFn(getEvent)
  }else {
    goog.events.pools.getObject = getObject;
    goog.events.pools.releaseObject = goog.nullFunction;
    goog.events.pools.getArray = getArray;
    goog.events.pools.releaseArray = goog.nullFunction;
    goog.events.pools.getProxy = getProxy;
    goog.events.pools.releaseProxy = goog.nullFunction;
    goog.events.pools.getListener = getListener;
    goog.events.pools.releaseListener = goog.nullFunction;
    goog.events.pools.getEvent = getEvent;
    goog.events.pools.releaseEvent = goog.nullFunction
  }
})();goog.events.listeners_ = {};
goog.events.listenerTree_ = {};
goog.events.sources_ = {};
goog.events.onString_ = "on";
goog.events.onStringMap_ = {};
goog.events.keySeparator_ = "_";
goog.events.listen = function(src, type, listener, opt_capt, opt_handler) {
  if(type) {
    if(goog.isArray(type)) {
      for(var i = 0;i < type.length;i++) {
        goog.events.listen(src, type[i], listener, opt_capt, opt_handler)
      }
      return null
    }else {
      var capture = !!opt_capt, map = goog.events.listenerTree_;
      type in map || (map[type] = goog.events.pools.getObject());
      map = map[type];
      if(!(capture in map)) {
        map[capture] = goog.events.pools.getObject();
        map.count_++
      }
      map = map[capture];
      var srcUid = goog.getUid(src), listenerArray, listenerObj;
      map.remaining_++;
      if(map[srcUid]) {
        listenerArray = map[srcUid];
        for(i = 0;i < listenerArray.length;i++) {
          listenerObj = listenerArray[i];
          if(listenerObj.listener == listener && listenerObj.handler == opt_handler) {
            if(listenerObj.removed) {
              break
            }
            return listenerArray[i].key
          }
        }
      }else {
        listenerArray = map[srcUid] = goog.events.pools.getArray();
        map.count_++
      }
      var proxy = goog.events.pools.getProxy();
      proxy.src = src;
      listenerObj = goog.events.pools.getListener();
      listenerObj.init(listener, proxy, src, type, capture, opt_handler);
      var key = listenerObj.key;
      proxy.key = key;
      listenerArray.push(listenerObj);
      goog.events.listeners_[key] = listenerObj;
      goog.events.sources_[srcUid] || (goog.events.sources_[srcUid] = goog.events.pools.getArray());
      goog.events.sources_[srcUid].push(listenerObj);
      if(src.addEventListener) {
        if(src == goog.global || !src.customEvent_) {
          src.addEventListener(type, proxy, capture)
        }
      }else {
        src.attachEvent(goog.events.getOnString_(type), proxy)
      }
      return key
    }
  }else {
    throw Error("Invalid event type");
  }
};
goog.events.listenOnce = function(src, type, listener, opt_capt, opt_handler) {
  if(goog.isArray(type)) {
    for(var i = 0;i < type.length;i++) {
      goog.events.listenOnce(src, type[i], listener, opt_capt, opt_handler)
    }
    return null
  }
  var key = goog.events.listen(src, type, listener, opt_capt, opt_handler), listenerObj = goog.events.listeners_[key];
  listenerObj.callOnce = true;
  return key
};
goog.events.listenWithWrapper = function(src, wrapper, listener, opt_capt, opt_handler) {
  wrapper.listen(src, listener, opt_capt, opt_handler)
};
goog.events.unlisten = function(src, type, listener, opt_capt, opt_handler) {
  if(goog.isArray(type)) {
    for(var i = 0;i < type.length;i++) {
      goog.events.unlisten(src, type[i], listener, opt_capt, opt_handler)
    }
    return null
  }
  var capture = !!opt_capt, listenerArray = goog.events.getListeners_(src, type, capture);
  if(!listenerArray) {
    return false
  }
  for(i = 0;i < listenerArray.length;i++) {
    if(listenerArray[i].listener == listener && listenerArray[i].capture == capture && listenerArray[i].handler == opt_handler) {
      return goog.events.unlistenByKey(listenerArray[i].key)
    }
  }
  return false
};
goog.events.unlistenByKey = function(key) {
  if(!goog.events.listeners_[key]) {
    return false
  }
  var listener = goog.events.listeners_[key];
  if(listener.removed) {
    return false
  }
  var src = listener.src, type = listener.type, proxy = listener.proxy, capture = listener.capture;
  if(src.removeEventListener) {
    if(src == goog.global || !src.customEvent_) {
      src.removeEventListener(type, proxy, capture)
    }
  }else {
    src.detachEvent && src.detachEvent(goog.events.getOnString_(type), proxy)
  }
  var srcUid = goog.getUid(src), listenerArray = goog.events.listenerTree_[type][capture][srcUid];
  if(goog.events.sources_[srcUid]) {
    var sourcesArray = goog.events.sources_[srcUid];
    goog.array.remove(sourcesArray, listener);
    sourcesArray.length == 0 && delete goog.events.sources_[srcUid]
  }
  listener.removed = true;
  listenerArray.needsCleanup_ = true;
  goog.events.cleanUp_(type, capture, srcUid, listenerArray);
  delete goog.events.listeners_[key];
  return true
};
goog.events.unlistenWithWrapper = function(src, wrapper, listener, opt_capt, opt_handler) {
  wrapper.unlisten(src, listener, opt_capt, opt_handler)
};
goog.events.cleanUp_ = function(type, capture, srcUid, listenerArray) {
  if(!listenerArray.locked_) {
    if(listenerArray.needsCleanup_) {
      for(var oldIndex = 0, newIndex = 0;oldIndex < listenerArray.length;oldIndex++) {
        if(listenerArray[oldIndex].removed) {
          var proxy = listenerArray[oldIndex].proxy;
          proxy.src = null;
          goog.events.pools.releaseProxy(proxy);
          goog.events.pools.releaseListener(listenerArray[oldIndex])
        }else {
          if(oldIndex != newIndex) {
            listenerArray[newIndex] = listenerArray[oldIndex]
          }
          newIndex++
        }
      }
      listenerArray.length = newIndex;
      listenerArray.needsCleanup_ = false;
      if(newIndex == 0) {
        goog.events.pools.releaseArray(listenerArray);
        delete goog.events.listenerTree_[type][capture][srcUid];
        goog.events.listenerTree_[type][capture].count_--;
        if(goog.events.listenerTree_[type][capture].count_ == 0) {
          goog.events.pools.releaseObject(goog.events.listenerTree_[type][capture]);
          delete goog.events.listenerTree_[type][capture];
          goog.events.listenerTree_[type].count_--
        }
        if(goog.events.listenerTree_[type].count_ == 0) {
          goog.events.pools.releaseObject(goog.events.listenerTree_[type]);
          delete goog.events.listenerTree_[type]
        }
      }
    }
  }
};
goog.events.removeAll = function(opt_obj, opt_type, opt_capt) {
  var count = 0, noObj = opt_obj == null, noType = opt_type == null, noCapt = opt_capt == null;
  opt_capt = !!opt_capt;
  if(noObj) {
    goog.object.forEach(goog.events.sources_, function(listeners) {
      for(var i = listeners.length - 1;i >= 0;i--) {
        var listener = listeners[i];
        if((noType || opt_type == listener.type) && (noCapt || opt_capt == listener.capture)) {
          goog.events.unlistenByKey(listener.key);
          count++
        }
      }
    })
  }else {
    var srcUid = goog.getUid(opt_obj);
    if(goog.events.sources_[srcUid]) {
      for(var sourcesArray = goog.events.sources_[srcUid], i$$0 = sourcesArray.length - 1;i$$0 >= 0;i$$0--) {
        var listener$$0 = sourcesArray[i$$0];
        if((noType || opt_type == listener$$0.type) && (noCapt || opt_capt == listener$$0.capture)) {
          goog.events.unlistenByKey(listener$$0.key);
          count++
        }
      }
    }
  }
  return count
};
goog.events.getListeners = function(obj, type, capture) {
  return goog.events.getListeners_(obj, type, capture) || []
};
goog.events.getListeners_ = function(obj, type, capture) {
  var map = goog.events.listenerTree_;
  if(type in map) {
    map = map[type];
    if(capture in map) {
      map = map[capture];
      var objUid = goog.getUid(obj);
      if(map[objUid]) {
        return map[objUid]
      }
    }
  }
  return null
};
goog.events.getListener = function(src, type, listener, opt_capt, opt_handler) {
  var capture = !!opt_capt, listenerArray = goog.events.getListeners_(src, type, capture);
  if(listenerArray) {
    for(var i = 0;i < listenerArray.length;i++) {
      if(listenerArray[i].listener == listener && listenerArray[i].capture == capture && listenerArray[i].handler == opt_handler) {
        return listenerArray[i]
      }
    }
  }
  return null
};
goog.events.hasListener = function(obj, opt_type, opt_capture) {
  var objUid = goog.getUid(obj), listeners = goog.events.sources_[objUid];
  if(listeners) {
    var hasType = goog.isDef(opt_type), hasCapture = goog.isDef(opt_capture);
    if(hasType && hasCapture) {
      var map = goog.events.listenerTree_[opt_type];
      return!!map && !!map[opt_capture] && objUid in map[opt_capture]
    }else {
      return hasType || hasCapture ? goog.array.some(listeners, function(listener) {
        return hasType && listener.type == opt_type || hasCapture && listener.capture == opt_capture
      }) : true
    }
  }
  return false
};
goog.events.expose = function(e) {
  var str = [], key;
  for(key in e) {
    e[key] && e[key].id ? str.push(key + " = " + e[key] + " (" + e[key].id + ")") : str.push(key + " = " + e[key])
  }
  return str.join("\n")
};
goog.events.getOnString_ = function(type) {
  if(type in goog.events.onStringMap_) {
    return goog.events.onStringMap_[type]
  }
  return goog.events.onStringMap_[type] = goog.events.onString_ + type
};
goog.events.fireListeners = function(obj, type, capture, eventObject) {
  var map = goog.events.listenerTree_;
  if(type in map) {
    map = map[type];
    if(capture in map) {
      return goog.events.fireListeners_(map[capture], obj, type, capture, eventObject)
    }
  }
  return true
};
goog.events.fireListeners_ = function(map, obj, type, capture, eventObject) {
  var retval = 1, objUid = goog.getUid(obj);
  if(map[objUid]) {
    map.remaining_--;
    var listenerArray = map[objUid];
    if(listenerArray.locked_) {
      listenerArray.locked_++
    }else {
      listenerArray.locked_ = 1
    }
    try {
      for(var length = listenerArray.length, i = 0;i < length;i++) {
        var listener = listenerArray[i];
        if(listener && !listener.removed) {
          retval &= goog.events.fireListener(listener, eventObject) !== false
        }
      }
    }finally {
      listenerArray.locked_--;
      goog.events.cleanUp_(type, capture, objUid, listenerArray)
    }
  }
  return Boolean(retval)
};
goog.events.fireListener = function(listener, eventObject) {
  var rv = listener.handleEvent(eventObject);
  listener.callOnce && goog.events.unlistenByKey(listener.key);
  return rv
};
goog.events.getTotalListenerCount = function() {
  return goog.object.getCount(goog.events.listeners_)
};
goog.events.dispatchEvent = function(src, e) {
  if(goog.isString(e)) {
    e = new goog.events.Event(e, src)
  }else {
    if(e instanceof goog.events.Event) {
      e.target = e.target || src
    }else {
      var oldEvent = e;
      e = new goog.events.Event(e.type, src);
      goog.object.extend(e, oldEvent)
    }
  }
  var rv = 1, ancestors, type = e.type, map = goog.events.listenerTree_;
  if(!(type in map)) {
    return true
  }
  map = map[type];
  var hasCapture = true in map, targetsMap;
  if(hasCapture) {
    ancestors = [];
    for(var parent = src;parent;parent = parent.getParentEventTarget()) {
      ancestors.push(parent)
    }
    targetsMap = map[true];
    targetsMap.remaining_ = targetsMap.count_;
    for(var i = ancestors.length - 1;!e.propagationStopped_ && i >= 0 && targetsMap.remaining_;i--) {
      e.currentTarget = ancestors[i];
      rv &= goog.events.fireListeners_(targetsMap, ancestors[i], e.type, true, e) && e.returnValue_ != false
    }
  }
  var hasBubble = false in map;
  if(hasBubble) {
    targetsMap = map[false];
    targetsMap.remaining_ = targetsMap.count_;
    if(hasCapture) {
      for(i = 0;!e.propagationStopped_ && i < ancestors.length && targetsMap.remaining_;i++) {
        e.currentTarget = ancestors[i];
        rv &= goog.events.fireListeners_(targetsMap, ancestors[i], e.type, false, e) && e.returnValue_ != false
      }
    }else {
      for(var current = src;!e.propagationStopped_ && current && targetsMap.remaining_;current = current.getParentEventTarget()) {
        e.currentTarget = current;
        rv &= goog.events.fireListeners_(targetsMap, current, e.type, false, e) && e.returnValue_ != false
      }
    }
  }
  return Boolean(rv)
};
goog.events.protectBrowserEventEntryPoint = function(errorHandler) {
  goog.events.handleBrowserEvent_ = errorHandler.protectEntryPoint(goog.events.handleBrowserEvent_);
  goog.events.pools.setProxyCallbackFunction(goog.events.handleBrowserEvent_)
};
goog.events.handleBrowserEvent_ = function(key, opt_evt) {
  if(!goog.events.listeners_[key]) {
    return true
  }
  var listener = goog.events.listeners_[key], type = listener.type, map = goog.events.listenerTree_;
  if(!(type in map)) {
    return true
  }
  map = map[type];
  var retval, targetsMap;
  if(goog.events.synthesizeEventPropagation_()) {
    var ieEvent = opt_evt || goog.getObjectByName("window.event"), hasCapture = true in map, hasBubble = false in map;
    if(hasCapture) {
      if(goog.events.isMarkedIeEvent_(ieEvent)) {
        return true
      }
      goog.events.markIeEvent_(ieEvent)
    }
    var evt = goog.events.pools.getEvent();
    evt.init(ieEvent, this);
    retval = true;
    try {
      if(hasCapture) {
        for(var ancestors = goog.events.pools.getArray(), parent = evt.currentTarget;parent;parent = parent.parentNode) {
          ancestors.push(parent)
        }
        targetsMap = map[true];
        targetsMap.remaining_ = targetsMap.count_;
        for(var i = ancestors.length - 1;!evt.propagationStopped_ && i >= 0 && targetsMap.remaining_;i--) {
          evt.currentTarget = ancestors[i];
          retval &= goog.events.fireListeners_(targetsMap, ancestors[i], type, true, evt)
        }
        if(hasBubble) {
          targetsMap = map[false];
          targetsMap.remaining_ = targetsMap.count_;
          for(i = 0;!evt.propagationStopped_ && i < ancestors.length && targetsMap.remaining_;i++) {
            evt.currentTarget = ancestors[i];
            retval &= goog.events.fireListeners_(targetsMap, ancestors[i], type, false, evt)
          }
        }
      }else {
        retval = goog.events.fireListener(listener, evt)
      }
    }finally {
      if(ancestors) {
        ancestors.length = 0;
        goog.events.pools.releaseArray(ancestors)
      }
      evt.dispose();
      goog.events.pools.releaseEvent(evt)
    }
    return retval
  }
  var be = new goog.events.BrowserEvent(opt_evt, this);
  try {
    retval = goog.events.fireListener(listener, be)
  }finally {
    be.dispose()
  }
  return retval
};
goog.events.pools.setProxyCallbackFunction(goog.events.handleBrowserEvent_);
goog.events.markIeEvent_ = function(e) {
  var useReturnValue = false;
  if(e.keyCode == 0) {
    try {
      e.keyCode = -1;
      return
    }catch(ex) {
      useReturnValue = true
    }
  }
  if(useReturnValue || e.returnValue == undefined) {
    e.returnValue = true
  }
};
goog.events.isMarkedIeEvent_ = function(e) {
  return e.keyCode < 0 || e.returnValue != undefined
};
goog.events.uniqueIdCounter_ = 0;
goog.events.getUniqueId = function(identifier) {
  return identifier + "_" + goog.events.uniqueIdCounter_++
};
goog.events.synthesizeEventPropagation_ = function() {
  if(goog.events.requiresSyntheticEventPropagation_ === undefined) {
    goog.events.requiresSyntheticEventPropagation_ = goog.userAgent.IE && !goog.global.addEventListener
  }
  return goog.events.requiresSyntheticEventPropagation_
};
goog.debug.entryPointRegistry.register(function(transformer) {
  goog.events.handleBrowserEvent_ = transformer(goog.events.handleBrowserEvent_);
  goog.events.pools.setProxyCallbackFunction(goog.events.handleBrowserEvent_)
});goog.events.EventTarget = function() {
};
goog.inherits(goog.events.EventTarget, goog.Disposable);
goog.events.EventTarget.prototype.customEvent_ = true;
goog.events.EventTarget.prototype.parentEventTarget_ = null;
goog.events.EventTarget.prototype.getParentEventTarget = function() {
  return this.parentEventTarget_
};
goog.events.EventTarget.prototype.addEventListener = function(type, handler, opt_capture, opt_handlerScope) {
  goog.events.listen(this, type, handler, opt_capture, opt_handlerScope)
};
goog.events.EventTarget.prototype.removeEventListener = function(type, handler, opt_capture, opt_handlerScope) {
  goog.events.unlisten(this, type, handler, opt_capture, opt_handlerScope)
};
goog.events.EventTarget.prototype.dispatchEvent = function(e) {
  return goog.events.dispatchEvent(this, e)
};
goog.events.EventTarget.prototype.disposeInternal = function() {
  goog.events.EventTarget.superClass_.disposeInternal.call(this);
  goog.events.removeAll(this);
  this.parentEventTarget_ = null
};goog.json = {};
goog.json.isValid_ = function(s) {
  if(/^\s*$/.test(s)) {
    return false
  }
  var backslashesRe = /\\["\\\/bfnrtu]/g, simpleValuesRe = /"[^"\\\n\r\u2028\u2029\x00-\x08\x10-\x1f\x80-\x9f]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, openBracketsRe = /(?:^|:|,)(?:[\s\u2028\u2029]*\[)+/g, remainderRe = /^[\],:{}\s\u2028\u2029]*$/;
  return remainderRe.test(s.replace(backslashesRe, "@").replace(simpleValuesRe, "]").replace(openBracketsRe, ""))
};
goog.json.parse = function(s) {
  var o = String(s);
  if(goog.json.isValid_(o)) {
    try {
      return eval("(" + o + ")")
    }catch(ex) {
    }
  }
  throw Error("Invalid JSON string: " + o);
};
goog.json.unsafeParse = function(s) {
  return eval("(" + s + ")")
};
goog.json.serialize = function(object) {
  return(new goog.json.Serializer).serialize(object)
};
goog.json.Serializer = function() {
};
goog.json.Serializer.prototype.serialize = function(object) {
  var sb = [];
  this.serialize_(object, sb);
  return sb.join("")
};
goog.json.Serializer.prototype.serialize_ = function(object, sb) {
  switch(typeof object) {
    case "string":
      this.serializeString_(object, sb);
      break;
    case "number":
      this.serializeNumber_(object, sb);
      break;
    case "boolean":
      sb.push(object);
      break;
    case "undefined":
      sb.push("null");
      break;
    case "object":
      if(object == null) {
        sb.push("null");
        break
      }
      if(goog.isArray(object)) {
        this.serializeArray_(object, sb);
        break
      }
      this.serializeObject_(object, sb);
      break;
    case "function":
      break;
    default:
      throw Error("Unknown type: " + typeof object);
  }
};
goog.json.Serializer.charToJsonCharCache_ = {'"':'\\"', "\\":"\\\\", "/":"\\/", "\u0008":"\\b", "\u000c":"\\f", "\n":"\\n", "\r":"\\r", "\t":"\\t", "\u000b":"\\u000b"};
goog.json.Serializer.charsToReplace_ = /\uffff/.test("\uffff") ? /[\\\"\x00-\x1f\x7f-\uffff]/g : /[\\\"\x00-\x1f\x7f-\xff]/g;
goog.json.Serializer.prototype.serializeString_ = function(s, sb) {
  sb.push('"', s.replace(goog.json.Serializer.charsToReplace_, function(c) {
    if(c in goog.json.Serializer.charToJsonCharCache_) {
      return goog.json.Serializer.charToJsonCharCache_[c]
    }
    var cc = c.charCodeAt(0), rv = "\\u";
    if(cc < 16) {
      rv += "000"
    }else {
      if(cc < 256) {
        rv += "00"
      }else {
        if(cc < 4096) {
          rv += "0"
        }
      }
    }
    return goog.json.Serializer.charToJsonCharCache_[c] = rv + cc.toString(16)
  }), '"')
};
goog.json.Serializer.prototype.serializeNumber_ = function(n, sb) {
  sb.push(isFinite(n) && !isNaN(n) ? n : "null")
};
goog.json.Serializer.prototype.serializeArray_ = function(arr, sb) {
  var l = arr.length;
  sb.push("[");
  for(var sep = "", i = 0;i < l;i++) {
    sb.push(sep);
    this.serialize_(arr[i], sb);
    sep = ","
  }
  sb.push("]")
};
goog.json.Serializer.prototype.serializeObject_ = function(obj, sb) {
  sb.push("{");
  var sep = "", key;
  for(key in obj) {
    if(obj.hasOwnProperty(key)) {
      var value = obj[key];
      if(typeof value != "function") {
        sb.push(sep);
        this.serializeString_(key, sb);
        sb.push(":");
        this.serialize_(value, sb);
        sep = ","
      }
    }
  }
  sb.push("}")
};goog.Timer = function(opt_interval, opt_timerObject) {
  this.interval_ = opt_interval || 1;
  this.timerObject_ = opt_timerObject || goog.Timer.defaultTimerObject;
  this.boundTick_ = goog.bind(this.tick_, this);
  this.last_ = goog.now()
};
goog.inherits(goog.Timer, goog.events.EventTarget);
goog.Timer.MAX_TIMEOUT_ = 2147483647;
goog.Timer.prototype.enabled = false;
goog.Timer.defaultTimerObject = goog.global.window;
goog.Timer.intervalScale = 0.8;
goog.Timer.prototype.timer_ = null;
goog.Timer.prototype.setInterval = function(interval) {
  this.interval_ = interval;
  if(this.timer_ && this.enabled) {
    this.stop();
    this.start()
  }else {
    this.timer_ && this.stop()
  }
};
goog.Timer.prototype.tick_ = function() {
  if(this.enabled) {
    var elapsed = goog.now() - this.last_;
    if(elapsed > 0 && elapsed < this.interval_ * goog.Timer.intervalScale) {
      this.timer_ = this.timerObject_.setTimeout(this.boundTick_, this.interval_ - elapsed)
    }else {
      this.dispatchTick();
      if(this.enabled) {
        this.timer_ = this.timerObject_.setTimeout(this.boundTick_, this.interval_);
        this.last_ = goog.now()
      }
    }
  }
};
goog.Timer.prototype.dispatchTick = function() {
  this.dispatchEvent(goog.Timer.TICK)
};
goog.Timer.prototype.start = function() {
  this.enabled = true;
  if(!this.timer_) {
    this.timer_ = this.timerObject_.setTimeout(this.boundTick_, this.interval_);
    this.last_ = goog.now()
  }
};
goog.Timer.prototype.stop = function() {
  this.enabled = false;
  if(this.timer_) {
    this.timerObject_.clearTimeout(this.timer_);
    this.timer_ = null
  }
};
goog.Timer.prototype.disposeInternal = function() {
  goog.Timer.superClass_.disposeInternal.call(this);
  this.stop();
  delete this.timerObject_
};
goog.Timer.TICK = "tick";
goog.Timer.callOnce = function(listener, opt_delay, opt_handler) {
  if(goog.isFunction(listener)) {
    if(opt_handler) {
      listener = goog.bind(listener, opt_handler)
    }
  }else {
    if(listener && typeof listener.handleEvent == "function") {
      listener = goog.bind(listener.handleEvent, listener)
    }else {
      throw Error("Invalid listener argument");
    }
  }
  return opt_delay > goog.Timer.MAX_TIMEOUT_ ? -1 : goog.Timer.defaultTimerObject.setTimeout(listener, opt_delay || 0)
};
goog.Timer.clear = function(timerId) {
  goog.Timer.defaultTimerObject.clearTimeout(timerId)
};goog.net = {};
goog.net.ErrorCode = {NO_ERROR:0, ACCESS_DENIED:1, FILE_NOT_FOUND:2, FF_SILENT_ERROR:3, CUSTOM_ERROR:4, EXCEPTION:5, HTTP_ERROR:6, ABORT:7, TIMEOUT:8, OFFLINE:9};
goog.net.ErrorCode.getDebugMessage = function(errorCode) {
  switch(errorCode) {
    case goog.net.ErrorCode.NO_ERROR:
      return"No Error";
    case goog.net.ErrorCode.ACCESS_DENIED:
      return"Access denied to content document";
    case goog.net.ErrorCode.FILE_NOT_FOUND:
      return"File not found";
    case goog.net.ErrorCode.FF_SILENT_ERROR:
      return"Firefox silently errored";
    case goog.net.ErrorCode.CUSTOM_ERROR:
      return"Application custom error";
    case goog.net.ErrorCode.EXCEPTION:
      return"An exception occurred";
    case goog.net.ErrorCode.HTTP_ERROR:
      return"Http response at 400 or 500 level";
    case goog.net.ErrorCode.ABORT:
      return"Request was aborted";
    case goog.net.ErrorCode.TIMEOUT:
      return"Request timed out";
    case goog.net.ErrorCode.OFFLINE:
      return"The resource is not available offline";
    default:
      return"Unrecognized error code"
  }
};goog.net.EventType = {COMPLETE:"complete", SUCCESS:"success", ERROR:"error", ABORT:"abort", READY:"ready", READY_STATE_CHANGE:"readystatechange", TIMEOUT:"timeout", INCREMENTAL_DATA:"incrementaldata", PROGRESS:"progress"};goog.net.XhrMonitor_ = function() {
  if(goog.userAgent.GECKO) {
    this.contextsToXhr_ = {};
    this.xhrToContexts_ = {};
    this.stack_ = []
  }
};
goog.net.XhrMonitor_.getKey = function(obj) {
  return goog.isString(obj) ? obj : goog.isObject(obj) ? goog.getUid(obj) : ""
};
goog.net.XhrMonitor_.prototype.logger_ = goog.debug.Logger.getLogger("goog.net.xhrMonitor");
goog.net.XhrMonitor_.prototype.enabled_ = goog.userAgent.GECKO;
goog.net.XhrMonitor_.prototype.pushContext = function(context) {
  if(this.enabled_) {
    var key = goog.net.XhrMonitor_.getKey(context);
    this.logger_.finest("Pushing context: " + context + " (" + key + ")");
    this.stack_.push(key)
  }
};
goog.net.XhrMonitor_.prototype.popContext = function() {
  if(this.enabled_) {
    var context = this.stack_.pop();
    this.logger_.finest("Popping context: " + context);
    this.updateDependentContexts_(context)
  }
};
goog.net.XhrMonitor_.prototype.markXhrOpen = function(xhr) {
  if(this.enabled_) {
    var uid = goog.getUid(xhr);
    this.logger_.fine("Opening XHR : " + uid);
    for(var i = 0;i < this.stack_.length;i++) {
      var context = this.stack_[i];
      this.addToMap_(this.contextsToXhr_, context, uid);
      this.addToMap_(this.xhrToContexts_, uid, context)
    }
  }
};
goog.net.XhrMonitor_.prototype.markXhrClosed = function(xhr) {
  if(this.enabled_) {
    var uid = goog.getUid(xhr);
    this.logger_.fine("Closing XHR : " + uid);
    delete this.xhrToContexts_[uid];
    for(var context in this.contextsToXhr_) {
      goog.array.remove(this.contextsToXhr_[context], uid);
      this.contextsToXhr_[context].length == 0 && delete this.contextsToXhr_[context]
    }
  }
};
goog.net.XhrMonitor_.prototype.updateDependentContexts_ = function(xhrUid) {
  var contexts = this.xhrToContexts_[xhrUid], xhrs = this.contextsToXhr_[xhrUid];
  if(contexts && xhrs) {
    this.logger_.finest("Updating dependent contexts");
    goog.array.forEach(contexts, function(context) {
      goog.array.forEach(xhrs, function(xhr) {
        this.addToMap_(this.contextsToXhr_, context, xhr);
        this.addToMap_(this.xhrToContexts_, xhr, context)
      }, this)
    }, this)
  }
};
goog.net.XhrMonitor_.prototype.addToMap_ = function(map, key, value) {
  map[key] || (map[key] = []);
  goog.array.contains(map[key], value) || map[key].push(value)
};
goog.net.xhrMonitor = new goog.net.XhrMonitor_;goog.net.XmlHttpFactory = function() {
};
goog.net.XmlHttpFactory.prototype.cachedOptions_ = null;
goog.net.XmlHttpFactory.prototype.getOptions = function() {
  return this.cachedOptions_ || (this.cachedOptions_ = this.internalGetOptions())
};goog.net.WrapperXmlHttpFactory = function(xhrFactory, optionsFactory) {
  this.xhrFactory_ = xhrFactory;
  this.optionsFactory_ = optionsFactory
};
goog.inherits(goog.net.WrapperXmlHttpFactory, goog.net.XmlHttpFactory);
goog.net.WrapperXmlHttpFactory.prototype.createInstance = function() {
  return this.xhrFactory_()
};
goog.net.WrapperXmlHttpFactory.prototype.getOptions = function() {
  return this.optionsFactory_()
};goog.net.XmlHttp = function() {
  return goog.net.XmlHttp.factory_.createInstance()
};
goog.net.XmlHttp.getOptions = function() {
  return goog.net.XmlHttp.factory_.getOptions()
};
goog.net.XmlHttp.OptionType = {USE_NULL_FUNCTION:0, LOCAL_REQUEST_ERROR:1};
goog.net.XmlHttp.ReadyState = {UNINITIALIZED:0, LOADING:1, LOADED:2, INTERACTIVE:3, COMPLETE:4};
goog.net.XmlHttp.setFactory = function(factory, optionsFactory) {
  goog.net.XmlHttp.setGlobalFactory(new goog.net.WrapperXmlHttpFactory(factory, optionsFactory))
};
goog.net.XmlHttp.setGlobalFactory = function(factory) {
  goog.net.XmlHttp.factory_ = factory
};
goog.net.DefaultXmlHttpFactory = function() {
};
goog.inherits(goog.net.DefaultXmlHttpFactory, goog.net.XmlHttpFactory);
goog.net.DefaultXmlHttpFactory.prototype.createInstance = function() {
  var progId = this.getProgId_();
  return progId ? new ActiveXObject(progId) : new XMLHttpRequest
};
goog.net.DefaultXmlHttpFactory.prototype.internalGetOptions = function() {
  var progId = this.getProgId_(), options = {};
  if(progId) {
    options[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] = true;
    options[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] = true
  }
  return options
};
goog.net.DefaultXmlHttpFactory.prototype.ieProgId_ = null;
goog.net.DefaultXmlHttpFactory.prototype.getProgId_ = function() {
  if(!this.ieProgId_ && typeof XMLHttpRequest == "undefined" && typeof ActiveXObject != "undefined") {
    for(var ACTIVE_X_IDENTS = ["MSXML2.XMLHTTP.6.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP"], i = 0;i < ACTIVE_X_IDENTS.length;i++) {
      var candidate = ACTIVE_X_IDENTS[i];
      try {
        new ActiveXObject(candidate);
        return this.ieProgId_ = candidate
      }catch(e) {
      }
    }
    throw Error("Could not create ActiveXObject. ActiveX might be disabled, or MSXML might not be installed");
  }
  return this.ieProgId_
};
goog.net.XmlHttp.setGlobalFactory(new goog.net.DefaultXmlHttpFactory);goog.net.XhrIo = function(opt_xmlHttpFactory) {
  this.headers = new goog.structs.Map;
  this.xmlHttpFactory_ = opt_xmlHttpFactory || null
};
goog.inherits(goog.net.XhrIo, goog.events.EventTarget);
goog.net.XhrIo.prototype.logger_ = goog.debug.Logger.getLogger("goog.net.XhrIo");
goog.net.XhrIo.CONTENT_TYPE_HEADER = "Content-Type";
goog.net.XhrIo.FORM_CONTENT_TYPE = "application/x-www-form-urlencoded;charset=utf-8";
goog.net.XhrIo.sendInstances_ = [];
goog.net.XhrIo.send = function(url, opt_callback, opt_method, opt_content, opt_headers, opt_timeoutInterval) {
  var x = new goog.net.XhrIo;
  goog.net.XhrIo.sendInstances_.push(x);
  opt_callback && goog.events.listen(x, goog.net.EventType.COMPLETE, opt_callback);
  goog.events.listen(x, goog.net.EventType.READY, goog.partial(goog.net.XhrIo.cleanupSend_, x));
  opt_timeoutInterval && x.setTimeoutInterval(opt_timeoutInterval);
  x.send(url, opt_method, opt_content, opt_headers)
};
goog.net.XhrIo.cleanup = function() {
  for(var instances = goog.net.XhrIo.sendInstances_;instances.length;) {
    instances.pop().dispose()
  }
};
goog.net.XhrIo.protectEntryPoints = function(errorHandler) {
  goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ = errorHandler.protectEntryPoint(goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_)
};
goog.net.XhrIo.cleanupSend_ = function(XhrIo) {
  XhrIo.dispose();
  goog.array.remove(goog.net.XhrIo.sendInstances_, XhrIo)
};
goog.net.XhrIo.prototype.active_ = false;
goog.net.XhrIo.prototype.xhr_ = null;
goog.net.XhrIo.prototype.xhrOptions_ = null;
goog.net.XhrIo.prototype.lastUri_ = "";
goog.net.XhrIo.prototype.lastMethod_ = "";
goog.net.XhrIo.prototype.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;
goog.net.XhrIo.prototype.lastError_ = "";
goog.net.XhrIo.prototype.errorDispatched_ = false;
goog.net.XhrIo.prototype.inSend_ = false;
goog.net.XhrIo.prototype.inOpen_ = false;
goog.net.XhrIo.prototype.inAbort_ = false;
goog.net.XhrIo.prototype.timeoutInterval_ = 0;
goog.net.XhrIo.prototype.timeoutId_ = null;
goog.net.XhrIo.prototype.setTimeoutInterval = function(ms) {
  this.timeoutInterval_ = Math.max(0, ms)
};
goog.net.XhrIo.prototype.send = function(url, opt_method, opt_content, opt_headers) {
  if(this.xhr_) {
    throw Error("[goog.net.XhrIo] Object is active with another request");
  }
  var method = opt_method || "GET";
  this.lastUri_ = url;
  this.lastError_ = "";
  this.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;
  this.lastMethod_ = method;
  this.errorDispatched_ = false;
  this.active_ = true;
  this.xhr_ = this.createXhr();
  this.xhrOptions_ = this.xmlHttpFactory_ ? this.xmlHttpFactory_.getOptions() : goog.net.XmlHttp.getOptions();
  goog.net.xhrMonitor.markXhrOpen(this.xhr_);
  this.xhr_.onreadystatechange = goog.bind(this.onReadyStateChange_, this);
  try {
    this.logger_.fine(this.formatMsg_("Opening Xhr"));
    this.inOpen_ = true;
    this.xhr_.open(method, url, true);
    this.inOpen_ = false
  }catch(err) {
    this.logger_.fine(this.formatMsg_("Error opening Xhr: " + err.message));
    this.error_(goog.net.ErrorCode.EXCEPTION, err);
    return
  }
  var content = opt_content || "", headers = this.headers.clone();
  opt_headers && goog.structs.forEach(opt_headers, function(value, key) {
    headers.set(key, value)
  });
  method == "POST" && !headers.containsKey(goog.net.XhrIo.CONTENT_TYPE_HEADER) && headers.set(goog.net.XhrIo.CONTENT_TYPE_HEADER, goog.net.XhrIo.FORM_CONTENT_TYPE);
  goog.structs.forEach(headers, function(value, key) {
    this.xhr_.setRequestHeader(key, value)
  }, this);
  try {
    if(this.timeoutId_) {
      goog.Timer.defaultTimerObject.clearTimeout(this.timeoutId_);
      this.timeoutId_ = null
    }
    if(this.timeoutInterval_ > 0) {
      this.logger_.fine(this.formatMsg_("Will abort after " + this.timeoutInterval_ + "ms if incomplete"));
      this.timeoutId_ = goog.Timer.defaultTimerObject.setTimeout(goog.bind(this.timeout_, this), this.timeoutInterval_)
    }
    this.logger_.fine(this.formatMsg_("Sending request"));
    this.inSend_ = true;
    this.xhr_.send(content);
    this.inSend_ = false
  }catch(err$$0) {
    this.logger_.fine(this.formatMsg_("Send error: " + err$$0.message));
    this.error_(goog.net.ErrorCode.EXCEPTION, err$$0)
  }
};
goog.net.XhrIo.prototype.createXhr = function() {
  return this.xmlHttpFactory_ ? this.xmlHttpFactory_.createInstance() : new goog.net.XmlHttp
};
goog.net.XhrIo.prototype.dispatchEvent = function(e) {
  if(this.xhr_) {
    goog.net.xhrMonitor.pushContext(this.xhr_);
    try {
      return goog.net.XhrIo.superClass_.dispatchEvent.call(this, e)
    }finally {
      goog.net.xhrMonitor.popContext()
    }
  }else {
    return goog.net.XhrIo.superClass_.dispatchEvent.call(this, e)
  }
};
goog.net.XhrIo.prototype.timeout_ = function() {
  if(typeof goog != "undefined") {
    if(this.xhr_) {
      this.lastError_ = "Timed out after " + this.timeoutInterval_ + "ms, aborting";
      this.lastErrorCode_ = goog.net.ErrorCode.TIMEOUT;
      this.logger_.fine(this.formatMsg_(this.lastError_));
      this.dispatchEvent(goog.net.EventType.TIMEOUT);
      this.abort(goog.net.ErrorCode.TIMEOUT)
    }
  }
};
goog.net.XhrIo.prototype.error_ = function(errorCode, err) {
  this.active_ = false;
  if(this.xhr_) {
    this.inAbort_ = true;
    this.xhr_.abort();
    this.inAbort_ = false
  }
  this.lastError_ = err;
  this.lastErrorCode_ = errorCode;
  this.dispatchErrors_();
  this.cleanUpXhr_()
};
goog.net.XhrIo.prototype.dispatchErrors_ = function() {
  if(!this.errorDispatched_) {
    this.errorDispatched_ = true;
    this.dispatchEvent(goog.net.EventType.COMPLETE);
    this.dispatchEvent(goog.net.EventType.ERROR)
  }
};
goog.net.XhrIo.prototype.abort = function(opt_failureCode) {
  if(this.xhr_ && this.active_) {
    this.logger_.fine(this.formatMsg_("Aborting"));
    this.active_ = false;
    this.inAbort_ = true;
    this.xhr_.abort();
    this.inAbort_ = false;
    this.lastErrorCode_ = opt_failureCode || goog.net.ErrorCode.ABORT;
    this.dispatchEvent(goog.net.EventType.COMPLETE);
    this.dispatchEvent(goog.net.EventType.ABORT);
    this.cleanUpXhr_()
  }
};
goog.net.XhrIo.prototype.disposeInternal = function() {
  if(this.xhr_) {
    if(this.active_) {
      this.active_ = false;
      this.inAbort_ = true;
      this.xhr_.abort();
      this.inAbort_ = false
    }
    this.cleanUpXhr_(true)
  }
  goog.net.XhrIo.superClass_.disposeInternal.call(this)
};
goog.net.XhrIo.prototype.onReadyStateChange_ = function() {
  !this.inOpen_ && !this.inSend_ && !this.inAbort_ ? this.onReadyStateChangeEntryPoint_() : this.onReadyStateChangeHelper_()
};
goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ = function() {
  this.onReadyStateChangeHelper_()
};
goog.net.XhrIo.prototype.onReadyStateChangeHelper_ = function() {
  if(this.active_) {
    if(typeof goog != "undefined") {
      if(this.xhrOptions_[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] && this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE && this.getStatus() == 2) {
        this.logger_.fine(this.formatMsg_("Local request error detected and ignored"))
      }else {
        if(this.inSend_ && this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE) {
          goog.Timer.defaultTimerObject.setTimeout(goog.bind(this.onReadyStateChange_, this), 0)
        }else {
          this.dispatchEvent(goog.net.EventType.READY_STATE_CHANGE);
          if(this.isComplete()) {
            this.logger_.fine(this.formatMsg_("Request complete"));
            this.active_ = false;
            if(this.isSuccess()) {
              this.dispatchEvent(goog.net.EventType.COMPLETE);
              this.dispatchEvent(goog.net.EventType.SUCCESS)
            }else {
              this.lastErrorCode_ = goog.net.ErrorCode.HTTP_ERROR;
              this.lastError_ = this.getStatusText() + " [" + this.getStatus() + "]";
              this.dispatchErrors_()
            }
            this.cleanUpXhr_()
          }
        }
      }
    }
  }
};
goog.net.XhrIo.prototype.cleanUpXhr_ = function(opt_fromDispose) {
  if(this.xhr_) {
    var xhr = this.xhr_, clearedOnReadyStateChange = this.xhrOptions_[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] ? goog.nullFunction : null;
    this.xhrOptions_ = this.xhr_ = null;
    if(this.timeoutId_) {
      goog.Timer.defaultTimerObject.clearTimeout(this.timeoutId_);
      this.timeoutId_ = null
    }
    if(!opt_fromDispose) {
      goog.net.xhrMonitor.pushContext(xhr);
      this.dispatchEvent(goog.net.EventType.READY);
      goog.net.xhrMonitor.popContext()
    }
    goog.net.xhrMonitor.markXhrClosed(xhr);
    try {
      xhr.onreadystatechange = clearedOnReadyStateChange
    }catch(e) {
      this.logger_.severe("Problem encountered resetting onreadystatechange: " + e.message)
    }
  }
};
goog.net.XhrIo.prototype.isComplete = function() {
  return this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE
};
goog.net.XhrIo.prototype.isSuccess = function() {
  switch(this.getStatus()) {
    case 0:
    ;
    case 200:
    ;
    case 204:
    ;
    case 304:
      return true;
    default:
      return false
  }
};
goog.net.XhrIo.prototype.getReadyState = function() {
  return this.xhr_ ? this.xhr_.readyState : goog.net.XmlHttp.ReadyState.UNINITIALIZED
};
goog.net.XhrIo.prototype.getStatus = function() {
  try {
    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ? this.xhr_.status : -1
  }catch(e) {
    this.logger_.warning("Can not get status: " + e.message);
    return-1
  }
};
goog.net.XhrIo.prototype.getStatusText = function() {
  try {
    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ? this.xhr_.statusText : ""
  }catch(e) {
    this.logger_.fine("Can not get status: " + e.message);
    return""
  }
};
goog.net.XhrIo.prototype.getResponseText = function() {
  try {
    return this.xhr_ ? this.xhr_.responseText : ""
  }catch(e) {
    this.logger_.fine("Can not get responseText: " + e.message);
    return""
  }
};
goog.net.XhrIo.prototype.getResponseHeader = function(key) {
  return this.xhr_ && this.isComplete() ? this.xhr_.getResponseHeader(key) : undefined
};
goog.net.XhrIo.prototype.getAllResponseHeaders = function() {
  return this.xhr_ && this.isComplete() ? this.xhr_.getAllResponseHeaders() : ""
};
goog.net.XhrIo.prototype.formatMsg_ = function(msg) {
  return msg + " [" + this.lastMethod_ + " " + this.lastUri_ + " " + this.getStatus() + "]"
};
goog.debug.entryPointRegistry.register(function(transformer) {
  goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ = transformer(goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_)
});goog.uri = {};
goog.uri.utils = {};
goog.uri.utils.CharCode_ = {AMPERSAND:38, EQUAL:61, HASH:35, QUESTION:63};
goog.uri.utils.buildFromEncodedParts = function(opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData, opt_fragment) {
  var out = [];
  opt_scheme && out.push(opt_scheme, ":");
  if(opt_domain) {
    out.push("//");
    opt_userInfo && out.push(opt_userInfo, "@");
    out.push(opt_domain);
    opt_port && out.push(":", opt_port)
  }
  opt_path && out.push(opt_path);
  opt_queryData && out.push("?", opt_queryData);
  opt_fragment && out.push("#", opt_fragment);
  return out.join("")
};
goog.uri.utils.splitRe_ = RegExp("^(?:([^:/?#.]+):)?(?://(?:([^/?#]*)@)?([\\w\\d\\-\\u0100-\\uffff.%]*)(?::([0-9]+))?)?([^?#]+)?(?:\\?([^#]*))?(?:#(.*))?$");
goog.uri.utils.ComponentIndex = {SCHEME:1, USER_INFO:2, DOMAIN:3, PORT:4, PATH:5, QUERY_DATA:6, FRAGMENT:7};
goog.uri.utils.split = function(uri) {
  return uri.match(goog.uri.utils.splitRe_)
};
goog.uri.utils.decodeIfPossible_ = function(uri) {
  return uri && decodeURIComponent(uri)
};
goog.uri.utils.getComponentByIndex_ = function(componentIndex, uri) {
  return goog.uri.utils.split(uri)[componentIndex] || null
};
goog.uri.utils.getScheme = function(uri) {
  return goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.SCHEME, uri)
};
goog.uri.utils.getUserInfoEncoded = function(uri) {
  return goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.USER_INFO, uri)
};
goog.uri.utils.getUserInfo = function(uri) {
  return goog.uri.utils.decodeIfPossible_(goog.uri.utils.getUserInfoEncoded(uri))
};
goog.uri.utils.getDomainEncoded = function(uri) {
  return goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.DOMAIN, uri)
};
goog.uri.utils.getDomain = function(uri) {
  return goog.uri.utils.decodeIfPossible_(goog.uri.utils.getDomainEncoded(uri))
};
goog.uri.utils.getPort = function(uri) {
  return Number(goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.PORT, uri)) || null
};
goog.uri.utils.getPathEncoded = function(uri) {
  return goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.PATH, uri)
};
goog.uri.utils.getPath = function(uri) {
  return goog.uri.utils.decodeIfPossible_(goog.uri.utils.getPathEncoded(uri))
};
goog.uri.utils.getQueryData = function(uri) {
  return goog.uri.utils.getComponentByIndex_(goog.uri.utils.ComponentIndex.QUERY_DATA, uri)
};
goog.uri.utils.getFragmentEncoded = function(uri) {
  var hashIndex = uri.indexOf("#");
  return hashIndex < 0 ? null : uri.substr(hashIndex + 1)
};
goog.uri.utils.setFragmentEncoded = function(uri, fragment) {
  return goog.uri.utils.removeFragment(uri) + (fragment ? "#" + fragment : "")
};
goog.uri.utils.getFragment = function(uri) {
  return goog.uri.utils.decodeIfPossible_(goog.uri.utils.getFragmentEncoded(uri))
};
goog.uri.utils.getHost = function(uri) {
  var pieces = goog.uri.utils.split(uri);
  return goog.uri.utils.buildFromEncodedParts(pieces[goog.uri.utils.ComponentIndex.SCHEME], pieces[goog.uri.utils.ComponentIndex.USER_INFO], pieces[goog.uri.utils.ComponentIndex.DOMAIN], pieces[goog.uri.utils.ComponentIndex.PORT])
};
goog.uri.utils.getPathAndAfter = function(uri) {
  var pieces = goog.uri.utils.split(uri);
  return goog.uri.utils.buildFromEncodedParts(null, null, null, null, pieces[goog.uri.utils.ComponentIndex.PATH], pieces[goog.uri.utils.ComponentIndex.QUERY_DATA], pieces[goog.uri.utils.ComponentIndex.FRAGMENT])
};
goog.uri.utils.removeFragment = function(uri) {
  var hashIndex = uri.indexOf("#");
  return hashIndex < 0 ? uri : uri.substr(0, hashIndex)
};
goog.uri.utils.haveSameDomain = function(uri1, uri2) {
  var pieces1 = goog.uri.utils.split(uri1), pieces2 = goog.uri.utils.split(uri2);
  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] == pieces2[goog.uri.utils.ComponentIndex.DOMAIN] && pieces1[goog.uri.utils.ComponentIndex.SCHEME] == pieces2[goog.uri.utils.ComponentIndex.SCHEME] && pieces1[goog.uri.utils.ComponentIndex.PORT] == pieces2[goog.uri.utils.ComponentIndex.PORT]
};
goog.uri.utils.assertNoFragmentsOrQueries_ = function(uri) {
  if(goog.DEBUG && (uri.indexOf("#") >= 0 || uri.indexOf("?") >= 0)) {
    throw Error("goog.uri.utils: Fragment or query identifiers are not supported: [" + uri + "]");
  }
};
goog.uri.utils.appendQueryData_ = function(buffer) {
  if(buffer[1]) {
    var baseUri = buffer[0], hashIndex = baseUri.indexOf("#");
    if(hashIndex >= 0) {
      buffer.push(baseUri.substr(hashIndex));
      buffer[0] = baseUri = baseUri.substr(0, hashIndex)
    }
    var questionIndex = baseUri.indexOf("?");
    if(questionIndex < 0) {
      buffer[1] = "?"
    }else {
      if(questionIndex == baseUri.length - 1) {
        buffer[1] = undefined
      }
    }
  }
  return buffer.join("")
};
goog.uri.utils.appendKeyValuePairs_ = function(key, value, pairs) {
  if(goog.isArray(value)) {
    for(var j = 0;j < value.length;j++) {
      pairs.push("&", key);
      value[j] !== "" && pairs.push("=", goog.string.urlEncode(value[j]))
    }
  }else {
    if(value != null) {
      pairs.push("&", key);
      value !== "" && pairs.push("=", goog.string.urlEncode(value))
    }
  }
};
goog.uri.utils.buildQueryDataBuffer_ = function(buffer, keysAndValues, opt_startIndex) {
  goog.asserts.assert(Math.max(keysAndValues.length - (opt_startIndex || 0), 0) % 2 == 0, "goog.uri.utils: Key/value lists must be even in length.");
  for(var i = opt_startIndex || 0;i < keysAndValues.length;i += 2) {
    goog.uri.utils.appendKeyValuePairs_(keysAndValues[i], keysAndValues[i + 1], buffer)
  }
  return buffer
};
goog.uri.utils.buildQueryData = function(keysAndValues, opt_startIndex) {
  var buffer = goog.uri.utils.buildQueryDataBuffer_([], keysAndValues, opt_startIndex);
  buffer[0] = "";
  return buffer.join("")
};
goog.uri.utils.buildQueryDataBufferFromMap_ = function(buffer, map) {
  for(var key in map) {
    goog.uri.utils.appendKeyValuePairs_(key, map[key], buffer)
  }
  return buffer
};
goog.uri.utils.buildQueryDataFromMap = function(map) {
  var buffer = goog.uri.utils.buildQueryDataBufferFromMap_([], map);
  buffer[0] = "";
  return buffer.join("")
};
goog.uri.utils.appendParams = function(uri) {
  return goog.uri.utils.appendQueryData_(arguments.length == 2 ? goog.uri.utils.buildQueryDataBuffer_([uri], arguments[1], 0) : goog.uri.utils.buildQueryDataBuffer_([uri], arguments, 1))
};
goog.uri.utils.appendParamsFromMap = function(uri, map) {
  return goog.uri.utils.appendQueryData_(goog.uri.utils.buildQueryDataBufferFromMap_([uri], map))
};
goog.uri.utils.appendParam = function(uri, key, value) {
  return goog.uri.utils.appendQueryData_([uri, "&", key, "=", goog.string.urlEncode(value)])
};
goog.uri.utils.findParam_ = function(uri, startIndex, keyEncoded, hashOrEndIndex) {
  for(var index = startIndex, keyLength = keyEncoded.length;(index = uri.indexOf(keyEncoded, index)) >= 0 && index < hashOrEndIndex;) {
    var precedingChar = uri.charCodeAt(index - 1);
    if(precedingChar == goog.uri.utils.CharCode_.AMPERSAND || precedingChar == goog.uri.utils.CharCode_.QUESTION) {
      var followingChar = uri.charCodeAt(index + keyLength);
      if(!followingChar || followingChar == goog.uri.utils.CharCode_.EQUAL || followingChar == goog.uri.utils.CharCode_.AMPERSAND || followingChar == goog.uri.utils.CharCode_.HASH) {
        return index
      }
    }
    index += keyLength + 1
  }
  return-1
};
goog.uri.utils.hashOrEndRe_ = /#|$/;
goog.uri.utils.hasParam = function(uri, keyEncoded) {
  return goog.uri.utils.findParam_(uri, 0, keyEncoded, uri.search(goog.uri.utils.hashOrEndRe_)) >= 0
};
goog.uri.utils.getParamValue = function(uri, keyEncoded) {
  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_), foundIndex = goog.uri.utils.findParam_(uri, 0, keyEncoded, hashOrEndIndex);
  if(foundIndex < 0) {
    return null
  }else {
    var endPosition = uri.indexOf("&", foundIndex);
    if(endPosition < 0 || endPosition > hashOrEndIndex) {
      endPosition = hashOrEndIndex
    }
    foundIndex += keyEncoded.length + 1;
    return goog.string.urlDecode(uri.substr(foundIndex, endPosition - foundIndex))
  }
};
goog.uri.utils.getParamValues = function(uri, keyEncoded) {
  for(var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_), position = 0, foundIndex, result = [];(foundIndex = goog.uri.utils.findParam_(uri, position, keyEncoded, hashOrEndIndex)) >= 0;) {
    position = uri.indexOf("&", foundIndex);
    if(position < 0 || position > hashOrEndIndex) {
      position = hashOrEndIndex
    }
    foundIndex += keyEncoded.length + 1;
    result.push(goog.string.urlDecode(uri.substr(foundIndex, position - foundIndex)))
  }
  return result
};
goog.uri.utils.trailingQueryPunctuationRe_ = /[?&]($|#)/;
goog.uri.utils.removeParam = function(uri, keyEncoded) {
  for(var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_), position = 0, foundIndex, buffer = [];(foundIndex = goog.uri.utils.findParam_(uri, position, keyEncoded, hashOrEndIndex)) >= 0;) {
    buffer.push(uri.substring(position, foundIndex));
    position = Math.min(uri.indexOf("&", foundIndex) + 1 || hashOrEndIndex, hashOrEndIndex)
  }
  buffer.push(uri.substr(position));
  return buffer.join("").replace(goog.uri.utils.trailingQueryPunctuationRe_, "$1")
};
goog.uri.utils.setParam = function(uri, keyEncoded, value) {
  return goog.uri.utils.appendParam(goog.uri.utils.removeParam(uri, keyEncoded), keyEncoded, value)
};
goog.uri.utils.appendPath = function(baseUri, path) {
  goog.uri.utils.assertNoFragmentsOrQueries_(baseUri);
  if(goog.string.endsWith(baseUri, "/")) {
    baseUri = baseUri.substr(0, baseUri.length - 1)
  }
  if(goog.string.startsWith(path, "/")) {
    path = path.substr(1)
  }
  return goog.string.buildString(baseUri, "/", path)
};
goog.uri.utils.StandardQueryParam = {RANDOM:"zx"};
goog.uri.utils.makeUnique = function(uri) {
  return goog.uri.utils.setParam(uri, goog.uri.utils.StandardQueryParam.RANDOM, goog.string.getRandomString())
};goog.Uri = function(opt_uri, opt_ignoreCase) {
  var m;
  if(opt_uri instanceof goog.Uri) {
    this.setIgnoreCase(opt_ignoreCase == null ? opt_uri.getIgnoreCase() : opt_ignoreCase);
    this.setScheme(opt_uri.getScheme());
    this.setUserInfo(opt_uri.getUserInfo());
    this.setDomain(opt_uri.getDomain());
    this.setPort(opt_uri.getPort());
    this.setPath(opt_uri.getPath());
    this.setQueryData(opt_uri.getQueryData().clone());
    this.setFragment(opt_uri.getFragment())
  }else {
    if(opt_uri && (m = goog.uri.utils.split(String(opt_uri)))) {
      this.setIgnoreCase(!!opt_ignoreCase);
      this.setScheme(m[goog.uri.utils.ComponentIndex.SCHEME] || "", true);
      this.setUserInfo(m[goog.uri.utils.ComponentIndex.USER_INFO] || "", true);
      this.setDomain(m[goog.uri.utils.ComponentIndex.DOMAIN] || "", true);
      this.setPort(m[goog.uri.utils.ComponentIndex.PORT]);
      this.setPath(m[goog.uri.utils.ComponentIndex.PATH] || "", true);
      this.setQuery(m[goog.uri.utils.ComponentIndex.QUERY_DATA] || "", true);
      this.setFragment(m[goog.uri.utils.ComponentIndex.FRAGMENT] || "", true)
    }else {
      this.setIgnoreCase(!!opt_ignoreCase);
      this.queryData_ = new goog.Uri.QueryData(null, this, this.ignoreCase_)
    }
  }
};
goog.Uri.RANDOM_PARAM = goog.uri.utils.StandardQueryParam.RANDOM;
goog.Uri.prototype.scheme_ = "";
goog.Uri.prototype.userInfo_ = "";
goog.Uri.prototype.domain_ = "";
goog.Uri.prototype.port_ = null;
goog.Uri.prototype.path_ = "";
goog.Uri.prototype.fragment_ = "";
goog.Uri.prototype.isReadOnly_ = false;
goog.Uri.prototype.ignoreCase_ = false;
goog.Uri.prototype.toString = function() {
  if(this.cachedToString_) {
    return this.cachedToString_
  }
  var out = [];
  this.scheme_ && out.push(goog.Uri.encodeSpecialChars_(this.scheme_, goog.Uri.reDisallowedInSchemeOrUserInfo_), ":");
  if(this.domain_) {
    out.push("//");
    this.userInfo_ && out.push(goog.Uri.encodeSpecialChars_(this.userInfo_, goog.Uri.reDisallowedInSchemeOrUserInfo_), "@");
    out.push(goog.Uri.encodeString_(this.domain_));
    this.port_ != null && out.push(":", String(this.getPort()))
  }
  if(this.path_) {
    this.hasDomain() && this.path_.charAt(0) != "/" && out.push("/");
    out.push(goog.Uri.encodeSpecialChars_(this.path_, goog.Uri.reDisallowedInPath_))
  }
  var query = String(this.queryData_);
  query && out.push("?", query);
  this.fragment_ && out.push("#", goog.Uri.encodeSpecialChars_(this.fragment_, goog.Uri.reDisallowedInFragment_));
  return this.cachedToString_ = out.join("")
};
goog.Uri.prototype.resolve = function(relativeUri) {
  var absoluteUri = this.clone(), overridden = relativeUri.hasScheme();
  if(overridden) {
    absoluteUri.setScheme(relativeUri.getScheme())
  }else {
    overridden = relativeUri.hasUserInfo()
  }
  if(overridden) {
    absoluteUri.setUserInfo(relativeUri.getUserInfo())
  }else {
    overridden = relativeUri.hasDomain()
  }
  if(overridden) {
    absoluteUri.setDomain(relativeUri.getDomain())
  }else {
    overridden = relativeUri.hasPort()
  }
  var path = relativeUri.getPath();
  if(overridden) {
    absoluteUri.setPort(relativeUri.getPort())
  }else {
    if(overridden = relativeUri.hasPath()) {
      if(path.charAt(0) != "/") {
        if(this.hasDomain() && !this.hasPath()) {
          path = "/" + path
        }else {
          var lastSlashIndex = absoluteUri.getPath().lastIndexOf("/");
          if(lastSlashIndex != -1) {
            path = absoluteUri.getPath().substr(0, lastSlashIndex + 1) + path
          }
        }
      }
      path = goog.Uri.removeDotSegments(path)
    }
  }
  if(overridden) {
    absoluteUri.setPath(path)
  }else {
    overridden = relativeUri.hasQuery()
  }
  if(overridden) {
    absoluteUri.setQuery(relativeUri.getDecodedQuery())
  }else {
    overridden = relativeUri.hasFragment()
  }
  overridden && absoluteUri.setFragment(relativeUri.getFragment());
  return absoluteUri
};
goog.Uri.prototype.clone = function() {
  return goog.Uri.create(this.scheme_, this.userInfo_, this.domain_, this.port_, this.path_, this.queryData_.clone(), this.fragment_, this.ignoreCase_)
};
goog.Uri.prototype.getScheme = function() {
  return this.scheme_
};
goog.Uri.prototype.setScheme = function(newScheme, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  if(this.scheme_ = opt_decode ? goog.Uri.decodeOrEmpty_(newScheme) : newScheme) {
    this.scheme_ = this.scheme_.replace(/:$/, "")
  }
  return this
};
goog.Uri.prototype.hasScheme = function() {
  return!!this.scheme_
};
goog.Uri.prototype.getUserInfo = function() {
  return this.userInfo_
};
goog.Uri.prototype.setUserInfo = function(newUserInfo, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  this.userInfo_ = opt_decode ? goog.Uri.decodeOrEmpty_(newUserInfo) : newUserInfo;
  return this
};
goog.Uri.prototype.hasUserInfo = function() {
  return!!this.userInfo_
};
goog.Uri.prototype.getDomain = function() {
  return this.domain_
};
goog.Uri.prototype.setDomain = function(newDomain, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  this.domain_ = opt_decode ? goog.Uri.decodeOrEmpty_(newDomain) : newDomain;
  return this
};
goog.Uri.prototype.hasDomain = function() {
  return!!this.domain_
};
goog.Uri.prototype.getPort = function() {
  return this.port_
};
goog.Uri.prototype.setPort = function(newPort) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  if(newPort) {
    newPort = Number(newPort);
    if(isNaN(newPort) || newPort < 0) {
      throw Error("Bad port number " + newPort);
    }
    this.port_ = newPort
  }else {
    this.port_ = null
  }
  return this
};
goog.Uri.prototype.hasPort = function() {
  return this.port_ != null
};
goog.Uri.prototype.getPath = function() {
  return this.path_
};
goog.Uri.prototype.setPath = function(newPath, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  this.path_ = opt_decode ? goog.Uri.decodeOrEmpty_(newPath) : newPath;
  return this
};
goog.Uri.prototype.hasPath = function() {
  return!!this.path_
};
goog.Uri.prototype.hasQuery = function() {
  return this.queryData_.toString() !== ""
};
goog.Uri.prototype.setQueryData = function(queryData, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  if(queryData instanceof goog.Uri.QueryData) {
    this.queryData_ = queryData;
    this.queryData_.uri_ = this;
    this.queryData_.setIgnoreCase(this.ignoreCase_)
  }else {
    opt_decode || (queryData = goog.Uri.encodeSpecialChars_(queryData, goog.Uri.reDisallowedInQuery_));
    this.queryData_ = new goog.Uri.QueryData(queryData, this, this.ignoreCase_)
  }
  return this
};
goog.Uri.prototype.setQuery = function(newQuery, opt_decode) {
  return this.setQueryData(newQuery, opt_decode)
};
goog.Uri.prototype.getDecodedQuery = function() {
  return this.queryData_.toDecodedString()
};
goog.Uri.prototype.getQueryData = function() {
  return this.queryData_
};
goog.Uri.prototype.setParameterValue = function(key, value) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  this.queryData_.set(key, value);
  return this
};
goog.Uri.prototype.getFragment = function() {
  return this.fragment_
};
goog.Uri.prototype.setFragment = function(newFragment, opt_decode) {
  this.enforceReadOnly();
  delete this.cachedToString_;
  this.fragment_ = opt_decode ? goog.Uri.decodeOrEmpty_(newFragment) : newFragment;
  return this
};
goog.Uri.prototype.hasFragment = function() {
  return!!this.fragment_
};
goog.Uri.prototype.makeUnique = function() {
  this.enforceReadOnly();
  this.setParameterValue(goog.Uri.RANDOM_PARAM, goog.string.getRandomString());
  return this
};
goog.Uri.prototype.removeParameter = function(key) {
  this.enforceReadOnly();
  this.queryData_.remove(key);
  return this
};
goog.Uri.prototype.enforceReadOnly = function() {
  if(this.isReadOnly_) {
    throw Error("Tried to modify a read-only Uri");
  }
};
goog.Uri.prototype.setIgnoreCase = function(ignoreCase) {
  this.ignoreCase_ = ignoreCase;
  this.queryData_ && this.queryData_.setIgnoreCase(ignoreCase)
};
goog.Uri.prototype.getIgnoreCase = function() {
  return this.ignoreCase_
};
goog.Uri.parse = function(uri, opt_ignoreCase) {
  return uri instanceof goog.Uri ? uri.clone() : new goog.Uri(uri, opt_ignoreCase)
};
goog.Uri.create = function(opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_query, opt_fragment, opt_ignoreCase) {
  var uri = new goog.Uri(null, opt_ignoreCase);
  opt_scheme && uri.setScheme(opt_scheme);
  opt_userInfo && uri.setUserInfo(opt_userInfo);
  opt_domain && uri.setDomain(opt_domain);
  opt_port && uri.setPort(opt_port);
  opt_path && uri.setPath(opt_path);
  opt_query && uri.setQueryData(opt_query);
  opt_fragment && uri.setFragment(opt_fragment);
  return uri
};
goog.Uri.resolve = function(base, rel) {
  base instanceof goog.Uri || (base = goog.Uri.parse(base));
  rel instanceof goog.Uri || (rel = goog.Uri.parse(rel));
  return base.resolve(rel)
};
goog.Uri.removeDotSegments = function(path) {
  if(path == ".." || path == ".") {
    return""
  }else {
    if(!goog.string.contains(path, "./") && !goog.string.contains(path, "/.")) {
      return path
    }else {
      for(var leadingSlash = goog.string.startsWith(path, "/"), segments = path.split("/"), out = [], pos = 0;pos < segments.length;) {
        var segment = segments[pos++];
        if(segment == ".") {
          leadingSlash && pos == segments.length && out.push("")
        }else {
          if(segment == "..") {
            if(out.length > 1 || out.length == 1 && out[0] != "") {
              out.pop()
            }
            leadingSlash && pos == segments.length && out.push("")
          }else {
            out.push(segment);
            leadingSlash = true
          }
        }
      }
      return out.join("/")
    }
  }
};
goog.Uri.decodeOrEmpty_ = function(val) {
  return val ? decodeURIComponent(val) : ""
};
goog.Uri.encodeString_ = function(unescapedPart) {
  if(goog.isString(unescapedPart)) {
    return encodeURIComponent(unescapedPart)
  }
  return null
};
goog.Uri.encodeSpecialRegExp_ = /^[a-zA-Z0-9\-_.!~*'():\/;?]*$/;
goog.Uri.encodeSpecialChars_ = function(unescapedPart, extra) {
  var ret = null;
  if(goog.isString(unescapedPart)) {
    ret = unescapedPart;
    goog.Uri.encodeSpecialRegExp_.test(ret) || (ret = encodeURI(unescapedPart));
    if(ret.search(extra) >= 0) {
      ret = ret.replace(extra, goog.Uri.encodeChar_)
    }
  }
  return ret
};
goog.Uri.encodeChar_ = function(ch) {
  var n = ch.charCodeAt(0);
  return"%" + (n >> 4 & 15).toString(16) + (n & 15).toString(16)
};
goog.Uri.reDisallowedInSchemeOrUserInfo_ = /[#\/\?@]/g;
goog.Uri.reDisallowedInPath_ = /[\#\?]/g;
goog.Uri.reDisallowedInQuery_ = /[\#\?@]/g;
goog.Uri.reDisallowedInFragment_ = /#/g;
goog.Uri.haveSameDomain = function(uri1String, uri2String) {
  var pieces1 = goog.uri.utils.split(uri1String), pieces2 = goog.uri.utils.split(uri2String);
  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] == pieces2[goog.uri.utils.ComponentIndex.DOMAIN] && pieces1[goog.uri.utils.ComponentIndex.PORT] == pieces2[goog.uri.utils.ComponentIndex.PORT]
};
goog.Uri.QueryData = function(opt_query, opt_uri, opt_ignoreCase) {
  this.encodedQuery_ = opt_query || null;
  this.uri_ = opt_uri || null;
  this.ignoreCase_ = !!opt_ignoreCase
};
goog.Uri.QueryData.prototype.ensureKeyMapInitialized_ = function() {
  if(!this.keyMap_) {
    this.keyMap_ = new goog.structs.Map;
    if(this.encodedQuery_) {
      for(var pairs = this.encodedQuery_.split("&"), i = 0;i < pairs.length;i++) {
        var indexOfEquals = pairs[i].indexOf("="), name = null, value = null;
        if(indexOfEquals >= 0) {
          name = pairs[i].substring(0, indexOfEquals);
          value = pairs[i].substring(indexOfEquals + 1)
        }else {
          name = pairs[i]
        }
        name = goog.string.urlDecode(name);
        name = this.getKeyName_(name);
        this.add(name, value ? goog.string.urlDecode(value) : "")
      }
    }
  }
};
goog.Uri.QueryData.createFromMap = function(map, opt_uri, opt_ignoreCase) {
  var keys = goog.structs.getKeys(map);
  if(typeof keys == "undefined") {
    throw Error("Keys are undefined");
  }
  return goog.Uri.QueryData.createFromKeysValues(keys, goog.structs.getValues(map), opt_uri, opt_ignoreCase)
};
goog.Uri.QueryData.createFromKeysValues = function(keys, values, opt_uri, opt_ignoreCase) {
  if(keys.length != values.length) {
    throw Error("Mismatched lengths for keys/values");
  }
  for(var queryData = new goog.Uri.QueryData(null, opt_uri, opt_ignoreCase), i = 0;i < keys.length;i++) {
    queryData.add(keys[i], values[i])
  }
  return queryData
};
goog.Uri.QueryData.prototype.keyMap_ = null;
goog.Uri.QueryData.prototype.count_ = null;
goog.Uri.QueryData.decodedQuery_ = null;
goog.Uri.QueryData.prototype.getCount = function() {
  this.ensureKeyMapInitialized_();
  return this.count_
};
goog.Uri.QueryData.prototype.add = function(key, value) {
  this.ensureKeyMapInitialized_();
  this.invalidateCache_();
  key = this.getKeyName_(key);
  if(this.containsKey(key)) {
    var current = this.keyMap_.get(key);
    goog.isArray(current) ? current.push(value) : this.keyMap_.set(key, [current, value])
  }else {
    this.keyMap_.set(key, value)
  }
  this.count_++;
  return this
};
goog.Uri.QueryData.prototype.remove = function(key) {
  this.ensureKeyMapInitialized_();
  key = this.getKeyName_(key);
  if(this.keyMap_.containsKey(key)) {
    this.invalidateCache_();
    var old = this.keyMap_.get(key);
    if(goog.isArray(old)) {
      this.count_ -= old.length
    }else {
      this.count_--
    }
    return this.keyMap_.remove(key)
  }
  return false
};
goog.Uri.QueryData.prototype.clear = function() {
  this.invalidateCache_();
  this.keyMap_ && this.keyMap_.clear();
  this.count_ = 0
};
goog.Uri.QueryData.prototype.isEmpty = function() {
  this.ensureKeyMapInitialized_();
  return this.count_ == 0
};
goog.Uri.QueryData.prototype.containsKey = function(key) {
  this.ensureKeyMapInitialized_();
  key = this.getKeyName_(key);
  return this.keyMap_.containsKey(key)
};
goog.Uri.QueryData.prototype.containsValue = function(value) {
  var vals = this.getValues();
  return goog.array.contains(vals, value)
};
goog.Uri.QueryData.prototype.getKeys = function() {
  this.ensureKeyMapInitialized_();
  for(var vals = this.keyMap_.getValues(), keys = this.keyMap_.getKeys(), rv = [], i = 0;i < keys.length;i++) {
    var val = vals[i];
    if(goog.isArray(val)) {
      for(var j = 0;j < val.length;j++) {
        rv.push(keys[i])
      }
    }else {
      rv.push(keys[i])
    }
  }
  return rv
};
goog.Uri.QueryData.prototype.getValues = function(opt_key) {
  this.ensureKeyMapInitialized_();
  var rv;
  if(opt_key) {
    var key = this.getKeyName_(opt_key);
    if(this.containsKey(key)) {
      var value = this.keyMap_.get(key);
      if(goog.isArray(value)) {
        return value
      }else {
        rv = [];
        rv.push(value)
      }
    }else {
      rv = []
    }
  }else {
    var vals = this.keyMap_.getValues();
    rv = [];
    for(var i = 0;i < vals.length;i++) {
      var val = vals[i];
      goog.isArray(val) ? goog.array.extend(rv, val) : rv.push(val)
    }
  }
  return rv
};
goog.Uri.QueryData.prototype.set = function(key, value) {
  this.ensureKeyMapInitialized_();
  this.invalidateCache_();
  key = this.getKeyName_(key);
  if(this.containsKey(key)) {
    var old = this.keyMap_.get(key);
    if(goog.isArray(old)) {
      this.count_ -= old.length
    }else {
      this.count_--
    }
  }
  this.keyMap_.set(key, value);
  this.count_++;
  return this
};
goog.Uri.QueryData.prototype.get = function(key, opt_default) {
  this.ensureKeyMapInitialized_();
  key = this.getKeyName_(key);
  if(this.containsKey(key)) {
    var val = this.keyMap_.get(key);
    return goog.isArray(val) ? val[0] : val
  }else {
    return opt_default
  }
};
goog.Uri.QueryData.prototype.toString = function() {
  if(this.encodedQuery_) {
    return this.encodedQuery_
  }
  if(!this.keyMap_) {
    return""
  }
  for(var sb = [], count = 0, keys = this.keyMap_.getKeys(), i = 0;i < keys.length;i++) {
    var key = keys[i], encodedKey = goog.string.urlEncode(key), val = this.keyMap_.get(key);
    if(goog.isArray(val)) {
      for(var j = 0;j < val.length;j++) {
        count > 0 && sb.push("&");
        sb.push(encodedKey);
        val[j] !== "" && sb.push("=", goog.string.urlEncode(val[j]));
        count++
      }
    }else {
      count > 0 && sb.push("&");
      sb.push(encodedKey);
      val !== "" && sb.push("=", goog.string.urlEncode(val));
      count++
    }
  }
  return this.encodedQuery_ = sb.join("")
};
goog.Uri.QueryData.prototype.toDecodedString = function() {
  if(!this.decodedQuery_) {
    this.decodedQuery_ = goog.Uri.decodeOrEmpty_(this.toString())
  }
  return this.decodedQuery_
};
goog.Uri.QueryData.prototype.invalidateCache_ = function() {
  delete this.decodedQuery_;
  delete this.encodedQuery_;
  this.uri_ && delete this.uri_.cachedToString_
};
goog.Uri.QueryData.prototype.clone = function() {
  var rv = new goog.Uri.QueryData;
  if(this.decodedQuery_) {
    rv.decodedQuery_ = this.decodedQuery_
  }
  if(this.encodedQuery_) {
    rv.encodedQuery_ = this.encodedQuery_
  }
  if(this.keyMap_) {
    rv.keyMap_ = this.keyMap_.clone()
  }
  return rv
};
goog.Uri.QueryData.prototype.getKeyName_ = function(arg) {
  var keyName = String(arg);
  if(this.ignoreCase_) {
    keyName = keyName.toLowerCase()
  }
  return keyName
};
goog.Uri.QueryData.prototype.setIgnoreCase = function(ignoreCase) {
  var resetKeys = ignoreCase && !this.ignoreCase_;
  if(resetKeys) {
    this.ensureKeyMapInitialized_();
    this.invalidateCache_();
    goog.structs.forEach(this.keyMap_, function(value, key) {
      var lowerCase = key.toLowerCase();
      if(key != lowerCase) {
        this.remove(key);
        this.add(lowerCase, value)
      }
    }, this)
  }
  this.ignoreCase_ = ignoreCase
};
goog.Uri.QueryData.prototype.extend = function() {
  for(var i = 0;i < arguments.length;i++) {
    var data = arguments[i];
    goog.structs.forEach(data, function(value, key) {
      this.add(key, value)
    }, this)
  }
};goog.appengine = {};
goog.appengine.DevChannel = function(channelId) {
  this.channelId_ = channelId
};
goog.appengine.DevChannel.prototype.open = function(opt_handler) {
  opt_handler = opt_handler || new goog.appengine.DevSocket.Handler;
  return new goog.appengine.DevSocket(this.channelId_, opt_handler)
};
goog.appengine.DevSocket = function(channelId, handler) {
  this.readyState = goog.appengine.DevSocket.ReadyState.CONNECTING;
  this.channelId_ = channelId;
  this.applicationKey_ = channelId.substring(channelId.lastIndexOf("-") + 1);
  this.clientId_ = null;
  this.onopen = handler.onopen;
  this.onmessage = handler.onmessage;
  this.onerror = handler.onerror;
  this.onclose = handler.onclose;
  this.doc_ = goog.dom.getDocument();
  this.win_ = goog.dom.getWindow();
  goog.net.XhrIo.send(this.getUrl_("connect"), goog.bind(this.connect_, this));
  goog.events.listen(this.win_, "beforeunload", goog.bind(this.beforeunload_, this))
};
goog.appengine.DevSocket.POLLING_TIMEOUT_MS = 500;
goog.appengine.DevSocket.BASE_URL = "/_ah/channel/";
goog.appengine.DevSocket.ReadyState = {CONNECTING:0, OPEN:1, CLOSING:2, CLOSED:3};
goog.appengine.DevSocket.prototype.getUrl_ = function(command) {
  var url = goog.appengine.DevSocket.BASE_URL + "dev?command=" + command + "&channel=" + this.channelId_;
  if(this.clientId_) {
    url += "&client=" + this.clientId_
  }
  return url
};
goog.appengine.DevSocket.prototype.connect_ = function(e) {
  var xhr = e.target;
  if(xhr.isSuccess()) {
    this.clientId_ = xhr.getResponseText();
    this.readyState = goog.appengine.DevSocket.ReadyState.OPEN;
    this.onopen();
    this.win_.setTimeout(goog.bind(this.poll_, this), goog.appengine.DevSocket.POLLING_TIMEOUT_MS)
  }else {
    this.readyState = goog.appengine.DevSocket.ReadyState.CLOSING;
    var evt = {};
    evt.description = xhr.getStatusText();
    evt.code = xhr.getStatus();
    this.onerror(evt);
    this.readyState = goog.appengine.DevSocket.ReadyState.CLOSED;
    this.onclose()
  }
};
goog.appengine.DevSocket.prototype.disconnect_ = function() {
  this.readyState = goog.appengine.DevSocket.ReadyState.CLOSED;
  this.onclose()
};
goog.appengine.DevSocket.prototype.forwardMessage_ = function(e) {
  var xhr = e.target;
  if(xhr.isSuccess()) {
    var evt = {};
    evt.data = xhr.getResponseText();
    evt.data.length && this.onmessage(evt);
    this.win_.setTimeout(goog.bind(this.poll_, this), goog.appengine.DevSocket.POLLING_TIMEOUT_MS)
  }else {
    evt = {};
    evt.description = xhr.getStatusText();
    evt.code = xhr.getStatus();
    this.onerror(evt)
  }
};
goog.appengine.DevSocket.prototype.poll_ = function() {
  goog.net.XhrIo.send(this.getUrl_("poll"), goog.bind(this.forwardMessage_, this))
};
goog.appengine.DevSocket.prototype.beforeunload_ = function() {
  var xhr = new goog.net.XmlHttp;
  xhr.open("GET", this.getUrl_("disconnect"), false);
  xhr.send()
};
goog.appengine.DevSocket.prototype.forwardSendComplete_ = function(e) {
  var xhr = e.target;
  if(!xhr.isSuccess()) {
    var evt = {};
    evt.description = xhr.getStatusText();
    evt.code = xhr.getStatus();
    this.onerror(evt)
  }
};
goog.appengine.DevSocket.prototype.send = function(data) {
  if(this.readyState != goog.appengine.DevSocket.ReadyState.OPEN) {
    return false
  }
  var url = goog.appengine.DevSocket.BASE_URL + "receive", sendData = new goog.Uri.QueryData;
  sendData.set("key", this.applicationKey_);
  sendData.set("msg", data);
  goog.net.XhrIo.send(url, goog.bind(this.forwardSendComplete_, this), "POST", sendData.toString());
  return true
};
goog.appengine.DevSocket.prototype.close = function() {
  this.readyState = goog.appengine.DevSocket.ReadyState.CLOSING;
  goog.net.XhrIo.send(this.getUrl_("disconnect"), goog.bind(this.disconnect_, this))
};
goog.appengine.DevSocket.Handler = function() {
};
goog.appengine.DevSocket.Handler.prototype.onopen = function() {
};
goog.appengine.DevSocket.Handler.prototype.onmessage = function() {
};
goog.appengine.DevSocket.Handler.prototype.onerror = function() {
};
goog.appengine.DevSocket.Handler.prototype.onclose = function() {
};
goog.exportSymbol("goog.appengine.Channel", goog.appengine.DevChannel);
goog.exportSymbol("goog.appengine.Channel.prototype.open", goog.appengine.DevChannel.prototype.open);
goog.exportSymbol("goog.appengine.Socket.Handler", goog.appengine.DevSocket.Handler);
goog.exportSymbol("goog.appengine.Socket.Handler.prototype.onopen", goog.appengine.DevChannel.prototype.onopen);
goog.exportSymbol("goog.appengine.Socket.Handler.prototype.onmessage", goog.appengine.DevSocket.Handler.prototype.onmessage);
goog.exportSymbol("goog.appengine.Socket.Handler.prototype.onerror", goog.appengine.DevSocket.Handler.prototype.onerror);
goog.exportSymbol("goog.appengine.Socket.Handler.prototype.onclose", goog.appengine.DevSocket.Handler.prototype.onclose);
goog.exportSymbol("goog.appengine.Socket", goog.appengine.DevSocket);
goog.exportSymbol("goog.appengine.Socket.ReadyState", goog.appengine.DevSocket.ReadyState);
goog.exportSymbol("goog.appengine.Socket.prototype.send", goog.appengine.DevSocket.prototype.send);
goog.exportSymbol("goog.appengine.Socket.prototype.close", goog.appengine.DevSocket.prototype.close); })()
