function changeTo(highlightcolor){
		source=event.srcElement
		if (source.tagName=="TR"||source.tagName=="TABLE")
			return
		while(source.tagName!="TD")
			source=source.parentElement
		if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore")
			source.style.backgroundColor=highlightcolor;
	}

	function changeBack(originalcolor){
		if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore")
			return
		if (event.toElement!=source)
			source.style.backgroundColor=originalcolor;
	}
	
	function checkForm() {
		if (document.form.name.value == "") {
			alert("Please enter you name");
			return false;
		}
		if (document.form.phonenumber.value == "") {
			alert("Please enter a phone number");
			return false;
		}
		if (document.form.emailaddress.value == "") {
			alert("Please enter an email address");
			return false;
		}
		if (document.form.comments.value == "") {
			alert("Please enter a question or comment");
			return false;
		}
	}