function correct_layout()
{

      if (document.getElementById('content').offsetHeight)
        {
          var div_heights = new Array(
            document.getElementById('content').offsetHeight,
            document.getElementById('navigation').offsetHeight,
            document.getElementById('features').offsetHeight);
          div_heights = div_heights.reverse(div_heights.sort(num_sort));
          var style_height = div_heights[0] + "px";
          document.getElementById('navigation').style.height = style_height;
          document.getElementById('content').style.height = style_height;
          document.getElementById('features').style.height = style_height;
        }
        
}

function num_sort(a, b)
{
        return a-b;
}   

function zeigeBild(bereich, bild)
{
if (document.getElementById)
{
  document.getElementById(bereich).innerHTML = "<img src='images\\" + bild + "' style='width:137px; margin-left:8px; padding:0px' onmouseover='zeigeBild()' onmouseout='versteckeBild()'  />";
}
}

function versteckeBild(bereich)
{
if (document.getElementById)
{
  
  document.getElementById(bereich).innerHTML = "";
}
}