function do_rollover(name, url) {
	eval("btn" + name + " = new Image();");
	eval("btn" + name + ".src = \"/images/gui/" + url + ".gif\";");
	eval("btn" + name + "_omo = new Image();");
	eval("btn" + name + "_omo.src = \"/images/gui/" + url + "_omo.gif\";");
}
			
function swap_image(obj, new_image) {
	obj.src = new_image.src;
}