function toggle_spoiler(e)
  {
    var div = e.parentNode.parentNode.getElementsByTagName('div')[1];
    var span = e.getElementsByTagName('span')[0];
    if(div.style.display == 'block')
      {
        span.replaceChild(document.createTextNode('öffnen'),span.firstChild);
        div.style.display = 'none';

        e.style.MozBorderRadius = '5px';
        e.style.WebkitBorderRadius = '5px';
        e.style.borderRadius = '5px';
      }
    else
      {
        span.replaceChild(document.createTextNode('schließen'),span.firstChild);
        div.style.display = 'block';

        e.style.MozBorderRadius = '5px 5px 0px 0px';
        e.style.WebkitBorderRadius = '5px 5px 0px 0px';
        e.style.borderRadius = '5px 5px 0px 0px';
      }
  }

function scaleImage(e)
  {
  if(e.style.maxWidth == '')
    {
    e.style.maxWidth = e.alt;
    e.style.maxHeight = e.rel;
    }
  else
    {
    e.alt = e.style.maxWidth;
    e.rel = e.style.maxHeight;
    e.style.maxWidth = '';
    e.style.maxHeight = '';
    }
  }