userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		specials_over = newImage("buttons/specials-over.gif");
		home_over = newImage("buttons/home-over.gif");
		tour_over = newImage("buttons/tour-over.gif");
		guide_over = newImage("buttons/guide-over.gif");
		guide_over016 = newImage("buttons/guide-over-16.gif");
		j_gallery_over = newImage("buttons/j_gallery-over.gif");
		training_over = newImage("buttons/training-over.gif");
		gallery_over = newImage("buttons/gallery-over.gif");
		wholesale_over = newImage("buttons/wholesale-over.gif");
		contact_over = newImage("buttons/contact-over.gif");
		faq_over = newImage("buttons/faq-over.gif");
		links_over = newImage("buttons/links-over.gif");
		preloadFlag = true;
	}
}