function na_change_img_src(name, nsdoc, rpath, preload)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img) {
    img.altsrc = img.src;
    img.src    = rpath;
  }
}

function na_preload_img()
{
  var img_list = na_preload_img.arguments;
  if (document.preloadlist == null)
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length; i++) {
    document.preloadlist[top+i] = new Image;
    document.preloadlist[top+i].src = img_list[i+1];
  }
}

function na_restore_img_src(name, nsdoc)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img && img.altsrc) {
    img.src    = img.altsrc;
    img.altsrc = null;
  }
}

function groessenwahn()
{
 if (screen.height >= "650" && screen.width >= "900")
 {
 document.write("<link rel='stylesheet' href='css/schrift10.css' type='text/css'>");
 }
}



function untergross()
{
 if (screen.height >= "650" && screen.width >= "900")
 {
 document.write("<link rel='stylesheet' href='../css/schrift10.css' type='text/css'>");
 }
}



function fensterauf(wo,name,was)
{
     neuesfenster=window.open(wo,'normfen','width=620,top=80,left=340,height=600, scrollbars');
     neuesfenster.focus();
}


function show(name)
{
if (!document.images) return "IE3";
else if (document.layers)
         {document.layers[name].visibility = "show";}
 else if (document.all) if (document.getElementById)
                    {document.getElementById(name).style.visibility = "visible";}
                        else
                        {document.all[name].style.visibility = "visible";}
  else if (document.getElementById)
   {document.getElementById(name).style.visibility = "visible";}
          else return "NN3";
}

function hide(name)
{
if (!document.images) return "IE3";
else if (document.layers)
         {document.layers[name].visibility = "hide";}
 else if (document.all) if (document.getElementById)
                    {document.getElementById(name).style.visibility = "hidden";}
                        else
                        {document.all[name].style.visibility = "hidden";}
  else if (document.getElementById)
   {document.getElementById(name).style.visibility = "hidden";}
          else return "NN3";
}