function correctContent()  {

  //get content height
  if (document.getElementById("idContentContainer"))  {

    var nr_content_height = document.getElementById("idContentContainer").offsetHeight
    if (nr_content_height < 1000)  {
      nr_content_height = 1000;
    }

    // main container
    if (document.getElementById("idContentContainer"))  {
      document.getElementById("idContentContainer").style.height = (nr_content_height + 50) + "px";
    }
    
    // main container
    if (document.getElementById("idSchatten_li"))  {
      document.getElementById("idSchatten_li").style.height = (nr_content_height + 340) + "px";
    }

    // main container
    if (document.getElementById("idSchatten_re"))  {
      document.getElementById("idSchatten_re").style.height = (nr_content_height + 340) + "px";
    }

    // main container
    if (document.getElementById("idOverall_background"))  {
      document.getElementById("idOverall_background").style.height = (nr_content_height + 300) + "px";
    }


    // main container
    if (document.getElementById("idMenu_background"))  {
      document.getElementById("idMenu_background").style.height = (nr_content_height + 110) + "px";
    }

    // main container
    if (document.getElementById("idBalken_trenner"))  {
      document.getElementById("idBalken_trenner").style.height = (nr_content_height + 60) + "px";
    }

    // footer
    if (document.getElementById("idFooter"))  {
      document.getElementById("idFooter").style.top = (nr_content_height + 300) + "px";
    }
  

  }
}