function ChangeImage(image_name, first, second) {
			if (eval("document."+image_name+".src == "+first)) {
				eval("document."+image_name+".src = "+second);
			}
	}

	function addRollover(title) {
		eval(title+"_up = new Image()");
		eval(title+"_up.src = 'menus/blue/"+title+".jpg'");
		eval(title+"_dn = new Image()");
		eval(title+"_dn.src = 'menus/blue/"+title+"a.jpg'");
	}

	function Show(i) {
		ChangeImage(i, i+"_up.src", i+"_dn.src");
	}

	function Hide(i) {
		ChangeImage(i, i+"_dn.src", i+"_up.src");
	}

        function preloadImages() {
		addRollover("menu1");
		addRollover("menu2");
		addRollover("menu3");
		addRollover("menu4");
		addRollover("home");
		addRollover("back");
	}

        preloadImages();