my97限制开始结束时间

[html]代码库

<link rel="stylesheet" type="text/css" href="../../easy-ui/themes/default/my97.css">
<script type="text/javascript" src="../../easy-ui/WdatePicker.js"></script>
日期：<input class="Wdate" id="beginTime" name="beginTime" style="width:145px" onclick="WdatePicker({dateFmt:'yyyy-MM-dd',maxDate:'#F{$dp.$D(\'endTime\') || \'%y-%M-%d\'}'})" />
 至 
<input class="Wdate" id="endTime" name="endTime" style="width:145px" onclick="WdatePicker({dateFmt:'yyyy-MM-dd',maxDate:'%y-%M-%d',minDate:'#F{$dp.$D(\'beginTime\')}'})" />
月份：<input class="Wdate" id="monthTime" name="monthTime" style="width:145px" onclick="WdatePicker({dateFmt:'yyyy-MM'})" />