function ValidateEndDate() {
if (document.getElementById('<%=txtStartDate.ClientID %>').value != "" && document.getElementById('<%=txtEndDate.ClientID %>').value != "") {
var StartDate;
var EndDate;
var value = document.getElementById('<%=txtStartDate.ClientID %>').value;
var year = value.substring(0, value.indexOf("-"));
value = value.substring(value.indexOf("-") + 1);
var smonth = value.substring(0, value.indexOf("-"));
var dt = value.substring(value.indexOf("-") + 1);
StartDate = Date.UTC(year, smonth, dt, 0, 0, 0);
value = document.getElementById('<%=txtEndDate.ClientID %>').value;
year = value.substring(0, value.indexOf("-"));
value = value.substring(value.indexOf("-") + 1);
smonth = value.substring(0, value.indexOf("-"));
dt = value.substring(value.indexOf("-") + 1);
EndDate = Date.UTC(year, smonth, dt, 0, 0, 0);
if (EndDate < StartDate) {
alert('End Date cannot be before Start Date');
return false;
}
}
return true;
}