/**
 * Öffnet ein Browser-Fenster
 * @param string $url URL der anzuzeigenden Seite
 * @param boolean $location Zeigt Adresszeile und Toolbar an
 * @return false
 */
function openWindow (url, location) {

	// Breite und Höhe
	window_width = screen.availWidth - 150;
	if (window_width > 850)
		window_width = 850;
	if (location) {
		window_height = screen.availHeight - 300;
		if (window_height > 480)
			window_height = 480;
	}
	else {
		window_height = screen.availHeight - 200;
		if (window_height > 580)
			window_height = 580;
	}

	// Fenstername
	if ((url.lastIndexOf("/") >= 0) && (url.lastIndexOf("/")+1 < url.lastIndexOf(".")))
		window_name = url.slice(url.lastIndexOf("/")+1, url.lastIndexOf("."));
	else
		window_name = "window";

	// Weitere Parameter
	parameter = "menubar=yes, resizable=yes, status=yes, scrollbars=yes, width=" + window_width + ", height=" + window_height + ", left=50, top=50";
	if (location)
		parameter += ", location=yes, personalbar=yes, toolbar=yes";

	window.open(url, window_name, parameter);
	return false;
}