function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		button_home_over = newImage("images/button_home_over.gif");
		button_job_postings_over = newImage("images/button_job_postings_over.gif");
		button_job_seekers_over = newImage("images/button_job_seekers_over.gif");
		button_employers_over = newImage("images/button_employers_over.gif");
		button_apply_online_over = newImage("images/button_apply_online_over.gif");
		button_faqs_over = newImage("images/button_faqs_over.gif");
		button_contact_us_over = newImage("images/button_contact_us_over.gif");
		preloadFlag = true;
	}
}