function openInfo (file, hoehe) {
   var width = 342;
   var height = hoehe;
   var xPos = (screen.width / 2) - (width / 2);
   var yPos = (screen.height / 2) - (height / 2);
   var infoWindow = window.open(file, "info", "width=" + width + ",height=" + height + ",toolbar=no,location=no,directories=no,status=no,menubar=no,resizeable=no,scrollbars=no,screenX=" + xPos + ",screenY=" + yPos + ",left=" + xPos + ",top=" + yPos + "");
   infoWindow.resizeTo(width, height);
   infoWindow.focus();

}