// JavaScript Document
function validateMail(frm){
	var mail = frm.email;
	var mailVal = mail.value;
	//alert(mailVal);
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(mailVal)){
		return true;
	}else{
		alert('Incorrect Email.');
		mail.focus();
		return false;
	}
}