(function() {
	images = {}

	function init_rollover(name) { 

		if (document.images) { 
			images[name] = new Array;
			images[name][0] = new Image(84,42);
			images[name][0].src = "images/"+name+".png";
			images[name][1] = new Image(84,42);
			images[name][1].src = "images/"+name+"-hover.png";
	
			var img = document.getElementById(name+"-img");
			DOM.Events.addListener(img,"mouseout",function() { img.src = images[name][0].src; });
			DOM.Events.addListener(img,"mouseover",function() { img.src = images[name][1].src; });
		}
	}
	DOM.Ready.onIdReady("dismiss-img",function() { 
		init_rollover("dismiss");
	});
	DOM.Ready.onIdReady("back-img",function() { 
		init_rollover("back");
	});
})();