/* 日期选择器 
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#element_id{ background:url(../images/calendar_day.png) right center no-repeat;}
.html_calendar{display:none;position:absolute;width:182px;font:12px Arial;border:1px solid #88b6d8;border-top:none;box-shadow:2px 2px 5px #083e66;z-index:101;} 
.html_calendar h5{position:relative;height:20px;padding:4px 6px;background:#88b6d8;color:#fff;font:normal 12px/20px "\5B8B\4F53";text-align:center;} 
.html_calendar h5 select{vertical-align:baseline;font:12px/18px Tahoma;} 
.html_calendar h5 span{padding:0 6px;} 
.html_calendar table{position:relative;border-collapse:collapse;table-layout:fixed;empty-cells:show;font-family:Arial;text-align:center;} 
.html_calendar table .sat{color:#06f} 
.html_calendar table .sun{color:#e00;} 
.html_calendar table .now{background:#d9e9fa;} 
.html_calendar table .selected{background:#090;color:#fff;} 
.html_calendar thead th{width:26px;height:24px;background:#fff;line-height:24px;text-align:center;} 
.html_calendar tfoot td{height:24px;border-top:1px solid #ccc;background:#eee;color:#999;font-family:"\5B8B\4F53";line-height:24px;} 
.html_calendar tfoot a{cursor:pointer;} 
.html_calendar tfoot .pre, 
.html_calendar tfoot .next{font-family:Tahoma;font-size:11px;} 
.html_calendar tfoot .clear{} 
.html_calendar tfoot a:hover{color:#333;text-decoration:none;} 
.html_calendar tbody td{position:static;width:26px;height:22px;padding:0;background:#eaf4fe;line-height:22px;} 
.html_calendar tbody td.num:hover{background:#88b6d8;color:#fff;text-decoration:none;cursor:pointer;} 
#calendar_block{display:none;position:absolute;top:0;left:0;background:#fff;filter:alpha(opacity=0);opacity:0;z-index:100;} 
/*------------------------------ */