function validate_email_sub()
        {
             var Ctlmse = document.getElementById('mse')   ;
             var email=/^[\s]*([A-Za-z0-9]+[._]?[\.]?){1,}\@(([A-Za-z0-9]+[._]?[-]?){1,}[\.]([A-Za-z]+))[\s]*$/
	     if(!email.exec(Ctlmse.value)) {
	          alert("Please enter a valid email.");
	          return false;
             }//endif
        this.form.target='_blank';
        return true;
        }//end  validate_email_sub