<!-- Idea by:  Nic Wolfe -->
function popUp(URL, width, height) {
	if(width == null) { width = 400; }
	if(height == null) { height = 400; }
	var day = new Date();
	var id = day.getTime();
	var left = Math.floor( (screen.width - width) / 2);
	var top = Math.floor( (screen.height - height) / 2);
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + "');");
}