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) {
		topgr_01_over = newImage("images/topgr_01-over.gif");
		topgr_02_over = newImage("images/topgr_02-over.gif");
		topgr_03_over = newImage("images/topgr_03-over.gif");
		topgr_04_over = newImage("images/topgr_04-over.gif");
		topgr_05_over = newImage("images/topgr_05-over.gif");
		topgr_06_over = newImage("images/topgr_06-over.gif");
		topgr_07_over = newImage("images/topgr_07-over.gif");
		topgr_08_over = newImage("images/topgr_08-over.gif");
		topgr_09_over = newImage("images/topgr_09-over.gif");
		topgr_10_over = newImage("images/topgr_10-over.gif");
		preloadFlag = true;
	}
}

function popupWindow(url) {
	window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=100,height=100,screenX=150,screenY=60,top=60,left=150');
}

function no_error(){ 
	return true; 
}
//window.onerror=no_error;