/*
----------------------------------------
programming: Mathias Hofacker
design: Ralf Dietl
copyright: 2002
----------------------------------------
*/


if(navigator.appName+navigator.appVersion.charAt(0) == 'Netscape4')
{ns4 = 1; ns6 = 0; ie4 = 0; ie5 = 0;}
if(navigator.appName+navigator.appVersion.charAt(0) == 'Netscape5')
{ns4 = 0; ns6 = 1; ie4 = 0; ie5 = 0;}
if(navigator.userAgent.indexOf('MSIE 4') >= 0)
{ns4 = 0; ns6 = 0; ie4 = 1; ie5 = 0;}
if(navigator.userAgent.indexOf('MSIE 5') >= 0 || navigator.userAgent.indexOf('MSIE 6') >= 0)
{ns4 = 0; ns6 = 0; ie4 = 0; ie5 = 1;} // ie5 = 1; is IE 5 and IE 6 !!

function imghigh (index, divname, imgname)
{
      if(ie5 || ns6)  {document.images[imgname].src = PicActive[index].src;}
      if(ns4)         {document.layers[divname].document.images[imgname].src = PicActive[index].src;}
      if(ie4)         {document.all[divname].document.images[imgname].src = PicActive[index].src;}
}

function imgnorm (index, divname, imgname)
{
      if(ie5 || ns6)  {document.images[imgname].src = PicNormal[index].src;}
      if(ns4)         {document.layers[divname].document.images[imgname].src = PicNormal[index].src;}
      if(ie4)         {document.all[divname].document.images[imgname].src = PicNormal[index].src;}
}



function MakeImgArray(n)
{
   this.length = n;
   for(var i = 0; i <= n; i++)
   {
      this[i] = new Image();
   }
   return this;
}

var PicActive =   new MakeImgArray(21);
var PicNormal =   new MakeImgArray(21);
/*------------- Kapitel aktiver Zustand --------------*/
PicActive[0].src  = 'images/nav_rdd_a.gif';  
PicActive[1].src  = 'images/nav_print_a.gif';
PicActive[2].src  = 'images/nav_web_a.gif';
PicActive[3].src  = 'imgnav/02_a.jpg';
PicActive[4].src  = 'imgnav/03_a.jpg';
PicActive[5].src  = 'imgnav/04_a.jpg';
PicActive[6].src  = 'imgnav/05_a.jpg';
PicActive[7].src  = 'imgnav/06_a.jpg';
PicActive[8].src  = 'imgnav/07_a.jpg';
PicActive[9].src  = 'imgnav/08_a.jpg';
PicActive[10].src  = 'imgnav/09_a.jpg';
PicActive[11].src  = 'imgnav/10_a.jpg';
PicActive[12].src  = 'imgnav/11_a.jpg';
PicActive[13].src  = 'imgnav/12_a.jpg';
PicActive[14].src  = 'imgnav/13_a.jpg';
PicActive[15].src  = 'imgnav/14_a.jpg';
PicActive[16].src  = 'imgnav/15_a.jpg';
// Nachtrag
PicActive[17].src  = 'imgnav/01_a.jpg'; 
// Nachtrag
PicActive[18].src  = 'imgnav/16_a.jpg'; 
PicActive[19].src  = 'imgnav/17_a.jpg'; 
PicActive[20].src  = 'imgnav/18_a.jpg'; 
PicActive[21].src  = 'imgnav/19_a.jpg'; 

/*------------- Kapitel aktiver Zustand --------------*/
PicNormal[0].src  = 'images/nav_rdd_i.gif';
PicNormal[1].src  = 'images/nav_print_i.gif';
PicNormal[2].src  = 'images/nav_web_i.gif';
PicNormal[3].src  = 'imgnav/02_i.jpg';
PicNormal[4].src  = 'imgnav/03_i.jpg';
PicNormal[5].src  = 'imgnav/04_i.jpg';
PicNormal[6].src  = 'imgnav/05_i.jpg';
PicNormal[7].src  = 'imgnav/06_i.jpg';
PicNormal[8].src  = 'imgnav/07_i.jpg';
PicNormal[9].src  = 'imgnav/08_i.jpg';
PicNormal[10].src  = 'imgnav/09_i.jpg';
PicNormal[11].src  = 'imgnav/10_i.jpg';
PicNormal[12].src  = 'imgnav/11_i.jpg';
PicNormal[13].src  = 'imgnav/12_i.jpg';
PicNormal[14].src  = 'imgnav/13_i.jpg';
PicNormal[15].src  = 'imgnav/14_i.jpg';
PicNormal[16].src  = 'imgnav/15_i.jpg';
// Nachtrag
PicNormal[17].src  = 'imgnav/01_i.jpg'; 
PicNormal[18].src  = 'imgnav/16_i.jpg'; 
PicNormal[19].src  = 'imgnav/17_i.jpg'; 
PicNormal[20].src  = 'imgnav/18_i.jpg'; 
PicNormal[21].src  = 'imgnav/19_i.jpg'; 


function hide_div (divname)
   {
         if(ns4)
         {
             var layerobj;
             //layerobj = eval("document." + divname);
             layerobj = document.layers[divname];
             layerobj.visibility = "hide";
         }
         if(ie4)
         {
             var layerobj;
             //layerobj = eval('document.all.' + divname);
             layerobj = document.all[divname];
             layerobj.style.visibility = 'hidden';
         }     
         if(ie5 || ns6)
         {
             var layerobj;
             layerobj = document.getElementById(divname);
             layerobj.style.visibility = 'hidden';
         }

  }

function show_div (divname)
{
         if(ns4)
         {
             var layerobj;
              //layerobj = eval("document." + divname);
             layerobj = document.layers[divname];
             layerobj.visibility = "show";
         }
         if(ie4)
         {
             var layerobj;
             //layerobj = eval('document.all.' + divname);
             layerobj = document.all[divname];
             layerobj.style.visibility = 'visible';
         }
          if(ie5 || ns6)
         {
             var layerobj;
             layerobj = document.getElementById(divname);
             layerobj.style.visibility = 'visible';
         } 
}