<!--
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages(id,src) {
	if (document.images && (preloadFlag == true)) {
		document.getElementById(id).src = src;
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		header_home_over = newImage("images/header_home-over.jpg");
		header_message_over = newImage("images/header_message-over.jpg");
		header_standards_over = newImage("images/header_standards-over.jpg");
		header_clasrooms_over = newImage("images/header_clasrooms-over.jpg");
		header_homework_over = newImage("images/header_homework-over.jpg");
		header_student_over = newImage("images/header_student-over.jpg");
		header_events_over = newImage("images/header_events-over.jpg");
		header_pta_over = newImage("images/header_pta-over.jpg");
		header_contacts_over = newImage("images/header_contacts-over.jpg");
		preloadFlag = true;
	}
}
// -->