<!--  
	function newImage(arg) {
		if (document.images) {
			rslt = new Image();
			rslt.src = arg;
			return rslt;
		}
	}
	
	function img_on(imgname){
	    document[imgname].src = eval(imgname + "_on.src");
	}
	
	function img_off(imgname){ 
		document.images[imgname].src = eval(imgname + "_off.src"); 
	} 
//-->