function openWindow(URL, windowTitle, windowWidth, windowHeight)
{
	var w;
	var wide = screen.width;
	var high = screen.height;
	var xCoordinate = ((wide / 2) - (windowWidth / 2));
	var yCoordinate = ((high / 2) - (windowHeight / 2));
	w = window.open(URL,windowTitle,"width=" + windowWidth + ",height=" + windowHeight + ",left=" + xCoordinate + ",top=" + yCoordinate + ",resizable=no,status=no,menubar=no,scrollbars=no,innerheight=" + windowHeight + ",innerwidth=" + windowWidth + ",screenx=" + xCoordinate + ",screeny=" + yCoordinate + ",toolbar=no");
	if (!w.opener)
		w.opener = window;
}