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) {
		logoyel = newImage("images/template/logoyel.gif");
		preloadFlag = true;
	}
}

function popitup(url) {
	newwindow=window.open(url,'name','height=700,width=950,scrollbars=yes,resizable=yes');
	if (window.focus) {newwindow.focus()}
	return false;
}