//Begin image rollover code
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
	
function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
	
		pre_home_on = newImage('/ahau-web/images/nav_home_on.gif');
		pre_about_on = newImage('/ahau-web/images/nav_about_on.gif');
		pre_university_on = newImage('/ahau-web/images/nav_university_on.gif');
		pre_campuses_on = newImage('/ahau-web/images/nav_campuses_on.gif');
		pre_store_on = newImage('/ahau-web/images/nav_store_on.gif');
		pre_faq_on = newImage('/ahau-web/images/nav_faq_on.gif');
		pre_news_on = newImage('/ahau-web/images/nav_news_on.gif');

		preloadFlag = true;
	}
}
//end image rollover code