function openPopUp(url, name, w, h)
{

	w += 32;
	h += 96;
	wleft = (screen.width - w) / 2;
	wtop = (screen.height - h) / 2;

	if (wleft < 0)
	{
		w = screen.width;
		wleft = 0;
	}

	if (wtop < 0)
	{
		h = screen.height;
		wtop = 0;
	}

	var win = window.open(url, name, 'width=' + w + ', height=' + h + ', left=' + wleft + ', top=' + wtop + ', location=no, menubar=no, directories=no, status=no, toolbar=no, scrollbars=no, resizable=no');

	win.resizeTo(w, h);
	win.moveTo(wleft, wtop);
	win.focus();

}