normal_image = new Image();
normal_image.src = "images/test_a.gif";

mouseover_image = new Image();
mouseover_image.src = "images/test_b.gif";

bars_cool = new Image();
bars_cool.src = "../buttons/night_short.gif";
bars_hot = new Image();
bars_hot.src = "../buttons/night_down.gif";

restos_cool = new Image();
restos_cool.src = "../buttons/restos_short.gif";
restos_hot = new Image();
restos_hot.src = "../buttons/restos_down.gif";

hotels_cool = new Image();
hotels_cool.src = "../buttons/hotels_short.gif";
hotels_hot = new Image();
hotels_hot.src = "../buttons/hotels_down.gif";

boutiques_cool = new Image();
boutiques_cool.src = "../buttons/boutiques_short.gif";
boutiques_hot = new Image();
boutiques_hot.src = "../buttons/boutiques_down.gif";

organisations_cool = new Image();
organisations_cool.src = "../buttons/orgs_short.gif";
organisations_hot = new Image();
organisations_hot.src = "../buttons/orgs_down.gif";

plus_cool = new Image();
plus_cool.src = "../buttons/plus_short.gif";
plus_hot = new Image();
plus_hot.src = "../buttons/plus_down.gif";

function swap(){
	if (document.images){
		for (var x=0; x<swap.arguments.length; x+=2) {
			document[swap.arguments[x]].src = eval(swap.arguments[x+1] + ".src");
		}
	}
}