function boxMagic(e) {
 var w = document.viewport.getWidth();
 if (w < 995) {
  $('image').hide();
  $('ansprechpartner').hide();
  $('content').style.marginRight = '20px';
 }
 else {
  $('image').show();
  $('ansprechpartner').show();
  $('content').style.marginRight = '260px';
 }
}
Event.observe(window, "resize", boxMagic);
Event.observe(window, "load", boxMagic);