var selected;

function loaded_multiMenu(id){
  myMultiMenu = [];
  allIds = id.split(',');
  for(i=0; i<allIds.length; i++){
    id = allIds[i];
    tagObj = document.getElementById(id);
    myMultiMenu[id] = new init_MultiMenu(tagObj);
    if(i==0){
      selected = myMultiMenu[id];
    }
  }
}

function init_MultiMenu(tagObj){
  tagObj.getElementsByTagName('b')[0].onclick = function(){
    if(tagObj.getElementsByTagName('div')[0].className == 'invisible'){
      tagObj.getElementsByTagName('div')[0].className = 'visible';
      if(selected!=''){
        selected.getElementsByTagName('div')[0].className = 'invisible';
      }
      selected = tagObj;
    }
    else{
      selected.getElementsByTagName('div')[0].className = 'invisible';
      selected = '';
    }
  }
  return tagObj;
}