function popup (path, title) {
	var filename = '/skripte/img_popup/img_popup.php';
	var l = (screen.availWidth - 450) / 2;
	var t = (screen.availHeight - 450) / 2;
	if (!path) path = '';
	window.open(encodeURI(filename + '?path=' + path + '&title=' + title),'Popup','scrollbars=no,width=450,height=450,screenX=' + l + ',screenY=' + t + ',left=' + l + ',top=' + t);
}