<style type="text/css">
#shangxia {
	position: fixed;
	width: 30px;
	height: 80px;
	bottom: 25%;
	right:0px;
	z-index: 1000;
	display: none;
	}
</style>

<div id="shangxia">
	<a href="#" id="shang" class="btn btn-sm btn-inverse" title="移至顶部">
		<i class="icon-double-angle-up "></i>
	</a>
	<a  id="xia" href="javascript:void(0);" class=" btn btn-sm btn-inverse" title="↓ 移至底部" onclick="$('html,body').animate({scrollTop: $(document).height()},400)">
		<i class="icon-double-angle-down "></i>
	</a>
</div>

<script type="text/javascript">
function resize_iframe_tab(){
	//window.tab_concent ? window.tab_concent.resize_iframe() : parent.window.tab_concent ? parent.window.tab_concent.resize_iframe() : ''
}

$(function(){
		// ----- 上下按钮
		var _breadcrumbs = $('#breadcrumbs')
		var _navbar = $('#navbar')
		var _shangxia = $('#shangxia')
		var _breadcrumbs_top = 0
		
		setInterval(function(){
			_shangxia.hide();
		},5000)
		
		$(window).scroll(function(){ 
			_breadcrumbs_top = 0
			if ($(window).scrollTop() > 45) {
				_breadcrumbs.addClass('breadcrumbs-fixed');
				if(_navbar.hasClass('navbar-fixed-top')){
					_breadcrumbs_top = 45
				}	    
			} else {
				_breadcrumbs.removeClass('breadcrumbs-fixed');
			}
			resize_iframe_tab()
			_breadcrumbs.css('top',_breadcrumbs_top)
			_shangxia.show()
		 })
		// ----- 上下按钮 END
		resize_iframe_tab()
})

</script>

