function validateContactForm() {
	var theForm = document.getElementById("contactForm"); //form reference
	var valid = true; // flag, must be true to proceed
	
	if(theForm.name.value == "") {
		alert("Please enter your name");
		valid=false;
		theForm.name.focus();
	}
	
	else if(theForm.email.value == "") {
		alert("Please enter your email address");
		valid=false;
		theForm.email.focus();
	}
	
	else if(theForm.comments.value == "") {
		alert("Please enter your message");
		valid=false;
		theForm.message.focus();
	}
	
	if(valid == true) {
		return true; //submit form
		
	} else {
		return false; //form invalid
	}
}