function onOver(name) {
		filename = document.images[name].src;
		newfilename = filename.replace(/_r0./gi, '_r1.');
		document.images[name].src = newfilename;
	}

	function onOut(name) {
		filename = document.images[name].src;
		newfilename = filename.replace(/_r1./gi, '_r0.');
		document.images[name].src = newfilename;
	}

	function preload() {
		var d=document;
		if (d.images) {
			var j = 0;
			if (!d.preimgs)
				d.preimgs = new Array();
			for (i=0; i<d.images.length; i++) {
				str = d.images[i].src;
				if (str.search('_r0.') != -1) {
					d.preimgs[j]       = new Image;
					d.preimgs[j++].src = str;
					filename = str.replace(/_r0./gi, '_r1.');
					d.preimgs[j]       = new Image;
					d.preimgs[j++].src = filename;
				}
			}
		}
	}