var ul_elements = Array('146', '112', '133', '163', '123', '137'); //ul Liste mit Name Tags

function toggleNavigation(obj) { 
  var el = document.getElementById(obj);
    
  //Show active ul subnavi, change class	 
  if ( el.style.display != 'none' ) {
    //el.style.display = 'none'; //Hide content
  }
  else {
    el.style.display = ''; //Show content
  }	
  
  for (var i = 1; document.getElementsByTagName("ul")[i].id != 'tfis_stop'; i++) { 
    var unorderedlist_id = document.getElementsByTagName("ul")[i].id; 
    if (unorderedlist_id != obj){      
      document.getElementsByTagName("ul")[i].style.display = 'none'; //Hide content      
    } else {
      document.getElementsByTagName("ul")[i].style.display = ''; //Show content
    }
  }
    
  //class='active' festlegen
  for (var i = 0; document.getElementsByTagName("li")[i].getElementsByTagName("a")[0].name != 'tfis_stop'; i++) {          
    var link_name = document.getElementsByTagName("li")[i].getElementsByTagName("a")[0].name;
    if(typeof link_name != 'undefined') {
      if(link_name == obj) { 
        document.getElementsByTagName("li")[i].getElementsByTagName("a")[0].className = "active";  
      } else {
        document.getElementsByTagName("li")[i].getElementsByTagName("a")[0].className = "";
      }
    }
  }  
 
}