Modification of simple tree menu

[superbb78]

Hi there,
Question about Simple Tree Menu
http://www.dynamicdrive.com/dynamicindex1/navigate1.htm
The tutorial shows separated expand or contract buttons to control the menu.
I'd like to know if I wanna expand a Folder, but contract other expanded folders, how can I make it?
Thanks in advance!

[vwphillips]

modify function

ddtreemenu.buildSubTree=function(treeid, ulelement, index){
 ulelement.parentNode.className="submenu"
 if (typeof persisteduls[treeid]=="object"){ //if cookie exists (persisteduls[treeid] is an array versus "" string)
  if (ddtreemenu.searcharray(persisteduls[treeid], index)){
   ulelement.setAttribute("rel", "open")
   ulelement.style.display="block"
   ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
  }
  else {
   ulelement.setAttribute("rel", "closed")
  }
 } //end cookie persist code
 else if (ulelement.getAttribute("rel")==null || ulelement.getAttribute("rel")==false){ //if no cookie and UL has NO rel attribute explicted added by user
   ulelement.setAttribute("rel", "closed")
 }
 else if (ulelement.getAttribute("rel")=="open"){  //else if no cookie and this UL has an explicit rel value of "open"
  ddtreemenu.expandSubTree(treeid, ulelement) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
 }
 ulelement.parentNode.onclick=function(e){
  var submenu=this.getElementsByTagName("ul")[0]
  if (submenu.getAttribute("rel")=="closed"){
   submenu.style.display="block"
   submenu.setAttribute("rel", "open")
   ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
   ddtreemenu.closelast(submenu);
  }
  else if (submenu.getAttribute("rel")=="open"){
   submenu.style.display="none"
   submenu.setAttribute("rel", "closed")
   ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")"
  }
  ddtreemenu.preventpropagate(e)
 }
 ulelement.onclick=function(e){
  ddtreemenu.preventpropagate(e)
 }
}

add new function

ddtreemenu.closelast=function(submenu){
 var obj=submenu,myl=0;
 while (obj.parentNode){
  obj=obj.parentNode;
  if (obj.className=='treeview'){
   break;
  }
  myl++;
 }
 var uls=obj.getElementsByTagName('UL'),ary=[];
 for (var level,ul,z0=0;z0<uls.length;z0++){
  level=-2;
  ul=uls[z0];
  while (ul.parentNode){
   level++;
   if (ul.className=='treeview'){
    break;
   }
   ul=ul.parentNode;
  }
  ary.push(level);
 }
 for (var z1=0;z1<uls.length;z1++){
  if (uls[z1]!=submenu&&ary[z1]>=myl){
   uls[z1].style.display="none";
   uls[z1].setAttribute("rel", "closed");
   uls[z1].parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")";
  }
 }
}

[superbb78]

Thank you very much!