function newImage(arg) {
			if (document.images) {
				rslt = new Image();
				rslt.src = arg;
				return rslt;
			}
		}
		function changeImages(img_name, img_file) {						
			if (document.images && (preloadFlag == true)) {
				document[img_name].src = "" + img_file;
				
			}
		}
		var preloadFlag = false;
		function preloadImages() {
			if (document.images) {
				b_over = newImage("..arts/buttonbckcl.gif");
				b_over = newImage("..arts/buttonbckhomecl.gif");
				b_over = newImage("..arts/buttonbcklogincl.gif");																																										
				b_over = newImage("..arts/buttonbcklogoutcl.gif");	
				preloadFlag = true;
			}			
		}

		function preloadImages_mp() {
			if (document.images) {
				b_over = newImage("..arts/buttonbck.gif");
				b_over = newImage("..arts/buttonbckhome.gif");
				b_over = newImage("..arts/buttonbcklogin.gif");																																											
				b_over = newImage("..arts/buttonbcklogout.gif");
				preloadFlag = true;
			}			
		}
		function displayWindow(url, width, height, name) {
        	var Win = window.open(url, name,'width=' + width + ',height=' + height + ',left = 0' + ',top = 0' + ',resizable=0,scrollbars=0,menubar=0,toolbar = 0' );
		}
		
		function displayWindow1(url, width, height, name) {
        	var Win = window.open(url, name,'width=' + width + ',height=' + height + ',left = 0' + ',top = 0' + ',resizable=0,scrollbars=1,menubar=0,toolbar = 0' );
		}