function raumsuche() {
	var numPers = document.getElementById('numpers').value;
	var w = 500, h = 440;
	var x = screen.width ? (screen.width - w) / 2 : 100;
	var y = screen.height ? (screen.height - h) / 2 : 100;

	if (numPers) {
		var win = window.open("/formulare/raumsuche.php?numpers="+numPers, "Raumsuche", "left="+x+", top="+y+", screenX="+x+", screenY="+y+", width="+w+", height="+h+", dependent=yes, location=no, menubar=no, resizable=yes, scrollbars=no, status=no, toolbar=no");
		win.focus();
	}

	return false;
}