// JavaScript Document

function valid_email()
{
   var email=document.getElementById("email").value;
   var at=document.getElementById("email").value.indexOf("@");
  
   submitOK="true";
   
   if(email.length<1)
   {
      alert("E-mail Id field can't be blank");
      submitOK="false";
      document.getElementById("email").focus();
      return false;
   }
   
   if(at==-1)
   {
      alert("Not a valid e-mail address!");
      submitOK="false";
      document.getElementById("email").focus();
      return false;
   }
   
   if(submitOK=="false")
      return false;
}