function setUpDatePicker(){
	$( "#id_start_date" ).datepicker();
	$( "#id_start_date" ).datepicker( "option", "dateFormat", "yy-mm-dd" );
	$( "#id_start_date" ).datepicker( "option", "defaultDate", "-1m" );

	$( "#id_end_date" ).datepicker();
	$( "#id_end_date" ).datepicker( "option", "defaultDate", "-1d" );
	$( "#id_end_date" ).datepicker( "option", "dateFormat", "yy-mm-dd" );
}