日历
第一种：
引用js，css
<script language=javascript src="${pageContext.request.contextPath}/js/datepicker/WdatePicker.js" defer=true></script>
<link rel="stylesheet" href="<%=request.getContextPath()%>/js/datepicker/skin/WdatePicker.css" type="text/css"></link>
html代码调用：
<input name='effectivedate' id='effectivedate' type='text' onFocus="WdatePicker({startDate:'%y-%M-01',dateFmt:'yyyy-MM-dd',alwaysUseStartDate:true})" class="Wdate" readonly="readonly"/><span class="Basis_fontred">*</span>
第二种：
引用js
<script language="javascript"
src="../../../js/My97DatePicker/WdatePicker.js"></script>
html代码：
<input name="cjTime" id="cjTime" type='text' size="12"
readonly="readonly" value=""
onFocus="WdatePicker({doubleCalendar:true,startDate:'%y-%M-%d',dateFmt:'yyyy-MM-dd',alwaysUseStartDate:true,minDate:'%y-%M-%d'})"
class="Wdate" onchange="" />
