function checkemail(){
	var str, str2;
	if (document.getElementById) {
		str = document.getElementById('form_email').value;
		str2 = document.getElementById('email_subject').value;
	} else {
		str=document.validation.form_email.value;
		str2=document.validation.email_subject.value;
	}
	// overly complicated, throws an error in ie mac
	//var filter=/^([\w-]+(?:\.[\w-]+)*)\@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	// something a little simpler
	var filter=/^[\w-\.]+\@[\w-\.]+\.[\w]+$/i;
	if (!filter.test(str)) {
		alert("Please input a valid email address!");
		return false;
	}

	if (str2 == "") {
		alert("Please input a valid email subject!");
		return false;
	}

	return true;
}

function checkbae(){
	if (document.layers||document.getElementById||document.all)
		return checkemail();
	else
		return true;
}