// JavaScript Document
function validation(form_id,email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) {
      //alert('Invalid Email Address');
	  document.forms[form_id].elements[email].focus();
	  document.forms[form_id].elements[email].value='Invalid Email Address';
	  document.forms[form_id].elements[email].style.color='#FF0000';	 
	  document.forms[form_id].elements[email].style.backgroundColor ='#f2f2f2';
      document.forms[form_id].elements[email].style.border = "2px #d0d0d0 dashed";
      return false;
   }
}