if (document.images) 
{
   var register_over = new Image();
   var registry_over = new Image();
   var history_over = new Image();
   var resources_over = new Image();
   var forum_over = new Image();
   var restoration_over = new Image();
   var gallery_over = new Image(); 
   register_over.src = "images/register_over.png";
   registry_over.src = "images/registry_over.png";
   history_over.src = "images/history_over.png";
   resources_over.src = "images/resources_over.png";
   forum_over.src = "images/forum_over.png";
   restoration_over.src = "images/restoration_over.png";
   gallery_over.src = "images/gallery_over.png";

   var register_off = new Image();
   var registry_off = new Image();
   var history_off = new Image();
   var resources_off = new Image();
   var forum_off = new Image();
   var restoration_off = new Image();
   var gallery_off = new Image();
   register_off.src = "images/register.png";
   registry_off.src = "images/registry.png";   
   history_off.src = "images/history.png";
   resources_off.src = "images/resources.png";
   forum_off.src = "images/forum.png";
   restoration_off.src = "images/restoration.png";
   gallery_off.src = "images/gallery.png";
}

function overimage(i) {
	document.images[i].src=eval(i +"_over.src");
}
function returnimage(i) {
	document.images[i].src=eval(i +"_off.src");
}