<!--forms[] Part of the -->

<td>

<div id="td12Div" style="display: none;"> Starting date: </div>

</td>

<td>

<div id="sdateDiv">

<date:date styleClass="psm-ui-text" name="startDate" property="startDate" divname="dayScope2"

sourceFormat="yyyy-MM-dd" targetFormat="yyyy-MM-dd" readonly="true"/>

</div>

</td>

<!--js Part of the -->

var startDate=document.forms[0].startDate.value;

var endDate=document.forms[0].endDate.value;

if(DateDiff(endDate,startDate)>3){

alert(" No more than three days ");

return;

}

function DateDiff(endDate,startDate)

{

var arrDate,objDate1,objDate2,intDays;

arrDate=endDate.split("-");

objDate1=new Date(arrDate[1]+'-'+arrDate[2]+'-'+arrDate[0]);

arrDate=startDate.split("-");

objDate2=new Date(arrDate[1] + '-'+arrDate[2]+'-'+arrDate[0]);

intDays=parseInt(Math.abs(objDate1-objDate2)/1000/60/60/24);

return intDays;

}