ASP.NET - What is the javascript for restrict future date selection ?

Hi frndz!

iam doing project in asp.net 4.0. I have to do javascript for restrict future date selection.

When the user select future date it should throw alert messages. so how could i validate the selection?

below is my code for validating when textbox empty and user select greater than todate:


function Openreport() {

        if (trim(document.forms[0].txtFromDate.value) == "") {
          alert('<%=arrLoginAlert[0]%>');
          document.forms[0].txtFromDate.focus();
          return false;
        }
        if (trim(document.forms[0].txtToDate.value) == "") {
          alert('<%=arrLoginAlert[2]%>');
          document.forms[0].txtToDate.focus();
          return false;
        }


        var temp = document.forms[0].txtFromDate.value;
        var FrmTemp = temp.substr(0, 10);
        var temp2 = document.forms[0].txtToDate.value;
        var ToTemp = temp2.substr(0, 10);
        var FrmTempNew = replaceAll(FrmTemp, "-", "/");
        var ToTempNew = replaceAll(ToTemp, "-", "/");
        
        var tempreturn = compareDateStrings(FrmTempNew, ToTempNew)
        if (tempreturn == "1") {
          alert('<%=arrLoginAlert[4]%>');
          document.forms[0].txtToDate.focus();
          return false;

        }




so i want code for restrict the future selection .give me the code its urgent for me.Thanks in Advance

This is the function I use in my project