if(document.images) 
{    
  nav_aktuell_on = new Image;
  nav_aktuell_on.src = 'fileadmin/templates/gk/menue/nav_aktuell_on.jpg';
  nav_aktuell_off = new Image;
  nav_aktuell_off.src = 'fileadmin/templates/gk/menue/nav_aktuell_off.jpg';  

  nav_information_on = new Image;
  nav_information_on.src = 'fileadmin/templates/gk/menue/nav_information_on.jpg';
  nav_information_off = new Image;
  nav_information_off.src = 'fileadmin/templates/gk/menue/nav_information_off.jpg';     

  nav_tiercommunity_on = new Image;
  nav_tiercommunity_on.src = 'fileadmin/templates/gk/menue/nav_tiercommunity_on.jpg';
  nav_tiercommunity_off = new Image;
  nav_tiercommunity_off.src = 'fileadmin/templates/gk/menue/nav_tiercommunity_off.jpg';

  nav_unterhaltung_on = new Image;
  nav_unterhaltung_on.src = 'fileadmin/templates/gk/menue/nav_unterhaltung_on.jpg';
  nav_unterhaltung_off = new Image;
  nav_unterhaltung_off.src = 'fileadmin/templates/gk/menue/nav_unterhaltung_off.jpg';

  nav_abonnement_on = new Image;
  nav_abonnement_on.src = 'fileadmin/templates/gk/menue/nav_abonnement_on.jpg';
  nav_abonnement_off = new Image;
  nav_abonnement_off.src = 'fileadmin/templates/gk/menue/nav_abonnement_off.jpg';

  nav_kleinanzeigen_on = new Image;
  nav_kleinanzeigen_on.src = 'fileadmin/templates/gk/menue/nav_kleinanzeigen_on.jpg';
  nav_kleinanzeigen_off = new Image;
  nav_kleinanzeigen_off.src = 'fileadmin/templates/gk/menue/nav_kleinanzeigen_off.jpg';
}

function imgAct(img_name)
{
  if(document.images) {
    img_on = eval(img_name + '_on.src');      
	  document.getElementById(img_name).src = img_on;
  }
}

function imgInact(img_name)
{
  if(document.images) {
    img_off = eval(img_name + '_off.src');          
    document.getElementById(img_name).src = img_off;
  }
}