function openNewWindow(URLtoOpen, windowName) { 
	//w += 32;
	//h += 96;
	wleft = (screen.width - 400) / 2;
	wtop = (screen.height - 400) / 2;
	newWindow=window.open(URLtoOpen, windowName, 'height=400,width=400,left='+wleft+',top='+wtop+',toolbar=no,scrollbars=yes'); 
}