function popWin(htmlUrl, width, height) {
	 _params = "width=" + width + ",height=" + height;
	
	_left = ((screen.width - width) >> 1);
	_top = ((screen.height - height) >> 1);
	_params += ",top=" + _top + ",left=" + _left + ",resizable,scrollbars";

	newWin = null;
	newWin = window.open(htmlUrl, "thewindow", _params);

	if (newWin.opener == null)  
		newWin.opener = window;
}