function islOpenHouse() {
	var file="http://www.in-sicherheit-leben.de/sicheres_haus/sicheres_haus.php";
	var windowName="islHouse";
	var properties="width=800, height=610, scrollbars=no, resizable=no, menubar=no";
	win=window.open (file, windowName, properties);
	return win;
}