WdatePicker 设置今天起 后30天可选

<link href="{:ADDON_PUBLIC_PATH}/style/My97DatePicker/skin/WdatePicker.css" rel="stylesheet" type="text/css">
<script src="{:ADDON_PUBLIC_PATH}/style/My97DatePicker/WdatePicker.js"></script>
<script src="{:ADDON_PUBLIC_PATH}/style/My97DatePicker/calendar.js"></script>

<input />