// JavaScript Document
function validate(form_id,email,email2) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   var address2 = document.forms[form_id].elements[email2].value;
   if(reg.test(address) == false) {
      alert('Email Address is invalid. Please retype');
      return false;
   }
   if (address != address2) {
      alert('Email Addresses do not match. Please retype');
      return false;
   }
}