function newImage(arg) {
	if (document.images) {
	rslt = new Image();
	rslt.src = arg;
	return rslt;
		}
	}

	function changeImages() {
		if (document.images && (preloadFlag == true)) {
			for (var i=0; i<changeImages.arguments.length; i+=2) {
				document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			}
		}
	}

	var preloadFlag = false;
	function preloadImages() {
		if (document.images) {
			preloadFlag = true;
		}
	}
	
	function openWindow(url)
	 {
	 popupWin = window.open(url, 'openWin', "width=400, height=400, scrollbars=yes");
	 }