WdatePicker日期插件能够实现美观简洁的日期选择界面，用法如下：
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <script language="javascript" type="text/javascript" src="WdatePicker.js"></script> <link rel="stylesheet" type="text/css" href="WdatePicker.css" > </head> <body> <input name="start_time" type="text" class="Wdate" onfocus="WdatePicker()"> </body></html>
