function showdetails(mygallery){//unteren teil zeigen:

   if (document.all){
    document.all(mygallery).style.visibility = "visible";

      }
   else if (document.getElementById)
   {   document.getElementById(mygallery).style.visibility="visible";
   }
  else if (document.layers){
  document.layers[mygallery].visibility="visible";
} 
}

function hidedetails(mygallery){//unteren teil verstecken:

   if (document.all){
    document.all(mygallery).style.visibility = "hidden";

      }
   else if (document.getElementById)
   {   document.getElementById(mygallery).style.visibility="hidden";
   }
  else if (document.layers){
  document.layers[mygallery].visibility="hidden";
} 


}


function changeimg(bild){

for(t=0;t<4;t++){   document.images[t].src=(document.images[t].name + ".gif");//}
  } document.images[bild].src=eval(("I"+ bild.charAt(4))).src;}
  
function rechangeimg(bild){
if(up!=bild){
     document.images[bild].src=(bild+".gif"); }     
   }
function upimg(bild){
buchstaben=buchstaben2;
up=bild;
}