<input class="Input1" id="txtStartDate" onfocus="WdatePicker({isShowOthers:true,dateFmt:'yyyy-MM-dd'})" />
<input class="Input1" id="txtEndDate" onfocus="WdatePicker({minDate:'#F{$dp.$D(\'txtStartDate\')}',isShowOthers:true,dateFmt:'yyyy-MM-dd'})" />
<input class="Input1" id="txtEndDate" onfocus="WdatePicker({minDate:'#F{$dp.$D(\'txtStartDate\')}',isShowOthers:true,dateFmt:'yyyy-MM-dd'})" />