<!--

function aufklappen(menue_id)
  {
   if(document.layers)
     document.layers[menue_id].visibility="show";
   else
     document.all[menue_id].style.visibility="visible";
  }

function zuklappen(menue_id)
  {
   if(document.layers)
     document.layers[menue_id].visibility="hide";
   else
     document.all[menue_id].style.visibility="hidden";
  }

function zwoframes(frame1, frame2)
  {
	info.location.href = "html/content/"+frame1+".html";
	image.location.href = "html/content/"+frame2+".html";
  }

function twoframes_act_dir(frame1, frame2)
  {
	info.location.href = frame1+".html";
	image.location.href = frame2+".html";
  }

//-->