toxicBug = "http://www.toxicbug.com/digitalart/";
theImages  = new Array("menu-digitalart2.gif", "menu-basics2.gif", "menu-photoshop2.gif", "menu-quickies2.gif", "menu-toxicbug2.gif");
preloadImg = new Array(theImages.length);
for (i=0; i<theImages.length; i++) { preloadImg[i] = new Image(); preloadImg[i].src = toxicBug + theImages[i]; }

function swap(ver, name) {
 var imgname = "menu-" + name + ver + ".gif";
 document.images[name].src = toxicBug + imgname;
}