if (document.images)
{
L1_1 = new Image();
L1_1.src = "images/L1_1.gif";
L2_1 = new Image();
L2_1.src = "images/L2_1.gif";
L3_1 = new Image();
L3_1.src = "images/L3_1.gif";
L4_1 = new Image();
L4_1.src = "images/L4_1.gif";
L5_1 = new Image();
L5_1.src = "images/L5_1.gif";
}

function deaktivieren(nummer)
{
if (document.images)
  { 
  document["L"+nummer].src="images/L"+nummer+"_0.gif";
  }            
}

function aktivieren(nummer)
{
if (document.images)
  {
  document["L"+nummer].src="images/L"+nummer+"_1.gif";
  }
}


function MM_showHideLayers() { //v1.2
  var i, visStr, args, theObj;
  args = MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) { //with arg triples (objNS,objIE,visStr)
    visStr   = args[i+2];
    if (navigator.appName == 'Netscape' && document.layers != null) {
      theObj = eval(args[i]);
      if (theObj) theObj.visibility = visStr;
    } else if (document.all != null) { //IE
      if (visStr == 'show') visStr = 'visible'; //convert vals
      if (visStr == 'hide') visStr = 'hidden';
      theObj = eval(args[i+1]);
      if (theObj) theObj.style.visibility = visStr;
  } }
}