image_preload_list = new Array("images/location_over.gif","images/classinfo_over.gif","images/bio_over.gif")
image_preload = new Array();
for(i=0; i<image_preload_list.length; i++){
	image_preload[i] = new Image();
	image_preload[i].src = image_preload_list[i];
}