function validate() {
	var isValid = true;
	var alertMsg = '';
	var name=document.contactForm.name.value;
	if (name=='') {
		alertMsg = alertMsg + 'Your name is a required field.\n';
		isValid=false;
	}
	var email=document.contactForm.email.value;
	if (email=='') {
		alertMsg = alertMsg + 'Your email address is a required field.\n';
		isValid=false;
	}
	if (isValid == false) {
		alert(alertMsg + "");
	}
	return isValid;
}