function submenu_fold () {
     toggle('fold','ul:id','home');
     toggle('fold','ul:id','interaktiv');
     toggle('fold','ul:id','forum');
     toggle('fold','ul:id','artikel');
     toggle('fold','ul:id','community');

}




function nav_active(nav) {
     switch (nav) {
          case "home":
               nav_active_fold ();
               document.getElementById('navHomLI').className = 'nav1active';
               document.getElementById('navHomA').className = 'nav1active';
               document.getElementById('navHomSP').className = 'nav1active';
               break;
               
          case "interaktiv":
               nav_active_fold ();
               document.getElementById('navIntLI').className = 'nav1active';
               document.getElementById('navIntA').className = 'nav1active';
               document.getElementById('navIntSP').className = 'nav1active';
               break;
               
          case "forum":
               nav_active_fold ();
               document.getElementById('navForLI').className = 'nav1active';
               document.getElementById('navForA').className = 'nav1active';
               document.getElementById('navForSP').className = 'nav1active';
               break;

          case "artikel":
               nav_active_fold ();
               document.getElementById('navArtLI').className = 'nav1active';
               document.getElementById('navArtA').className = 'nav1active';
               document.getElementById('navArtSP').className = 'nav1active';
               break;

          case "community":
               nav_active_fold ();
               document.getElementById('navComLI').className = 'nav1active';
               document.getElementById('navComA').className = 'nav1active';
               document.getElementById('navComSP').className = 'nav1active';
               break;
     }
}

function nav_active_fold () {
    document.getElementById('navIntLI').className = 'nav1';
    document.getElementById('navIntA').className = 'nav1';
    document.getElementById('navIntSP').className = 'nav1';
    
    document.getElementById('navHomLI').className = 'nav1';
    document.getElementById('navHomA').className = 'nav1';
    document.getElementById('navHomSP').className = 'nav1';
    
    document.getElementById('navArtLI').className = 'nav1';
    document.getElementById('navArtA').className = 'nav1';
    document.getElementById('navArtSP').className = 'nav1';
    
    document.getElementById('navForLI').className = 'nav1';
    document.getElementById('navForA').className = 'nav1';
    document.getElementById('navForSP').className = 'nav1';
    
    document.getElementById('navComLI').className = 'nav1';
    document.getElementById('navComA').className = 'nav1';
    document.getElementById('navComSP').className = 'nav1';
}

function submenu_show(nav) {
     switch (nav) {
          case "home":
               submenu_fold();
               toggle('unfold','ul:id','home');
               break;
          case "interaktiv":
               submenu_fold();
               toggle('unfold','ul:id','interaktiv');
               break;
          case "forum":
               submenu_fold();
               toggle('unfold','ul:id','forum');
               break;
          case "artikel":
               submenu_fold();
               toggle('unfold','ul:id','artikel');
               break;
          case "community":
               submenu_fold();
               toggle('unfold','ul:id','community');
               break;
          default:
               submenu_fold();
               break;
     }
}