function checkMail(email)
{
	var x = email;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)) 	{
		//alert('YES! Correct email address');
		return true;
	} else {
		alert('Incorrect e-mail address format! Please change.');
		return false;
	}
}
function checkMailId(email, id)
{
	var x = email;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)) 	{
		//alert('YES! Correct email address');
		return true;
	} else {
		alert('Incorrect e-mail address format! Please change.');
		return false;
		document.all(id).focus();
	}
}