//Navigation Bild wechseln
function navSwitchImage(img)
{
  if (img.className != 'active')
  {
	if(img.src.indexOf('_off') > 0)
	{
	  var imgname = img.src.split('_');
	  img.src = imgname[0] + '_on.gif';
	}
	else
	{
	  var imgname = img.src.split('_');
	  img.src = imgname[0] + '_off.gif';
	}
  }
  else
  {
	var imgname = img.src.split('_');
	img.src = imgname[0] + '_on.gif';
  }
}

//Subnavigation Farbe wechseln
function divdisplay()
{
	document.getElementById('subnavigation').style.display='none';
	document.getElementById('subnavigation_fokus').style.display='block';
}