// JScript File

  function ChkValidate()
    {
        var email=document.getElementById('TxtUserName');
        var pwd=document.getElementById('TxtPassword');
        
        var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
        
        if (email!=null)
        {
            if (email.value=="")
            {
                alert('Enter Email Address');
                email.focus();
                return false;
            }
            if(reg.test(email.value) == false) 
           {
              alert('Invalid Email Address');
              email.value="";
              email.focus();
              return false;
           }
        }
        if (pwd!=null)
        {
            if (pwd.value=="")
            {
                alert('Enter Password');
                pwd.focus();
                return false;
            }
        }        
    }