function fixAll() {
  if(0 == $('#TB_closeWindowButton').length)
    window.setTimeout('fixAll()', 100);
  else {
    var close = $('#TB_closeWindowButton').clone(true).html('schließen').attr('title', 'schliessen');
    $('#TB_ImageOff').attr('title', 'schliessen');
    $('#TB_Image').attr('title', 'schliessen');
    $('#TB_closeWindow').empty().append(close);
    $('#TB_Image[src$=png]').pngfix({imageFixSrc:'/img/x.gif'});
  }
}

$(document).ready(function() {
  $('a.thickbox').click(function() {
    window.setTimeout('fixAll()', 100);
  });
});