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) {
		gn_03_over = newImage("images/gn_03-over.gif");
		gn_05_over = newImage("images/gn_05-over.gif");
		gn_07_over = newImage("images/gn_07-over.gif");
		gn_09_over = newImage("images/gn_09-over.gif");
		gn_11_over = newImage("images/gn_11-over.gif");
		preloadFlag = true;
	}
}

function popup(url) {
	window.open(url,'popup','width=280,height=150,top=300,left=400,location=no,status=no,toolbar=no,menubar=no,resizable=no,scrollbars=no');
}

function popup2(url) {
	window.open(url,'popup','width=600,height=400,top=50,left=50,location=no,status=no,toolbar=1,menubar=no,resizable=1,scrollbars=1');
}