function ShowHide(element, bild)
{
 if (document.getElementById(element).style.visibility == "visible")
 {
  document.getElementById(element).style.display = "none";
  document.getElementById(element).style.visibility = "hidden";
  
  MM_swapImage(bild ,'','../bilder/plus.gif',1);
 }
 else
 {
  document.getElementById(element).style.display = "block";
  document.getElementById(element).style.visibility = "visible";
  
  MM_swapImage(bild ,'','../bilder/minus.gif',1);
 }
}