userAgent = window.navigator.userAgent;
		browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
		
		function newImage(arg) {
			if (document.images) {
				rslt = new Image();
				rslt.src = arg;
				return rslt;
			}
		}
		
		function findElement(n,ly) {
			if (browserVers < 4)		return document[n];
			var curDoc = ly ? ly.document : document;
			var elem = curDoc[n];
			if (!elem) {
				for (var i=0;i<curDoc.layers.length;i++) {
					elem = findElement(n,curDoc.layers[i]);
					if (elem) return elem;
				}
			}
			return elem;
		}
		
		function changeImages() {
			if (document.images && (preloadFlag == true)) {
				var img;
				for (var i=0; i<changeImages.arguments.length; i+=2) {
					img = null;
					if (document.layers) {
						img = findElement(changeImages.arguments[i],0);
					}
					else {
						img = document.images[changeImages.arguments[i]];
					}
					if (img) {
						img.src = changeImages.arguments[i+1];
					}
				}
			}
		}