// german navigation

     var toggle_array = new Array();
      var active;
      var act_img = [];
      act_img[1] = '../images/d/lfirma.gif';
      act_img[2] = '../images/d/lleistungsuebersicht.gif';
      act_img[3] = '../images/d/lprodukte.gif';
      act_img[4] = '../images/d/latberatung.gif';
      act_img[5] = '../images/d/lkontakt.gif';
      act_img[6] = '../images/limpressum.gif';
      act_img[7] = '../images/d/lentwicklungen.gif';
      act_img[8] = '../images/d/lwissenswertes.gif';
      act_img[9] = '../images/d/lveranstaltungen.gif';
      act_img[10] = '../images/d/lkatalog.gif';

      var inact_img = [];
      inact_img[1] = '../images/d/blfirma.gif';
      inact_img[2] = '../images/d/blleistungsuebersicht.gif';
      inact_img[3] = '../images/d/blprodukte.gif';
      inact_img[4] = '../images/d/blatberatung.gif';
      inact_img[5] = '../images/d/blkontakt.gif';
      inact_img[6] = '../images/blimpressum.gif';
      inact_img[7] = '../images/d/blentwicklungen.gif';
      inact_img[8] = '../images/d/blwissenswertes.gif';
      inact_img[9] = '../images/d/blveranstaltungen.gif';
      inact_img[10] = '../images/d/blkatalog.gif';

      function deactivate_all_top (x) {
         var i=1;
         for (i=1;i<=10;i++)
         {
           top.navi.document.getElementById(i).src = inact_img[i];

         }
      }

function changeNavi(x) {
  var start = top.navi.document.getElementById('start');
  start.style.display = "block";


  if (x != 1) {
    var block = top.navi.document.getElementById('firma');
    block.style.display = "none";
  }
  if (x != 3) {
    var block = top.navi.document.getElementById('produkte');
    block.style.display = "none";
  }
  if (x != 7) {
    var block = top.navi.document.getElementById('entwicklungen');
    block.style.display = "none";
  }

  deactivate_all_subitems();
  top.navi.document.getElementById(x).src = act_img[x];
  


}

function katalog_sonder() {
  changeSubNavs('p1');
  top.navi.document.getElementById(10).src = act_img[10];
}

function katalog_nav() {
  var block = top.navi.document.getElementById('firma');
  block.style.display = "none";

  var block = top.navi.document.getElementById('entwicklungen');
  block.style.display = "none";
}

function deactivate_all_subitems (x) {
  deactivate_all_top();
  // firm
  var i=1;
  for (i=1;i<=4;i++)
    {
      var old_src = new String(top.navi.document.getElementById('f' + i).src);
      var new_src = old_src.replace(/red/, 'black');
      top.navi.document.getElementById('f' + i).src = new_src;
      
    }
  // products
  i=1;
  for (i=1;i<=10;i++)
    {
      var old_src = new String(top.navi.document.getElementById('p' + i).src);
      var new_src = old_src.replace(/red/, 'black');
      top.navi.document.getElementById('p' + i).src = new_src;
      
    }
  // development
  i=1;
  for (i=1;i<=2;i++)
    {
      var old_src = new String(top.navi.document.getElementById('e' + i).src);
      var new_src = old_src.replace(/red/, 'black');
      top.navi.document.getElementById('e' + i).src = new_src;
      
    }
 }

function changeSubNavs(x) {
  deactivate_all_subitems();
  var old_src = new String(top.navi.document.getElementById(x).src);
  // alert('old: ' + old_src);
  var new_src = old_src.replace(/black/, 'red');
  //  alert('xxx' + new_src);
  top.navi.document.getElementById(x).src = new_src;
}