var persisteduls=new Object()
var ddtreemenu=new Object()

ddtreemenu.closefolder="" //set image path to "closed" folder image
ddtreemenu.openfolder="" //set image path to "open" folder image

//////////No need to edit beyond here///////////////////////////

ddtreemenu.createTree=function(treeid, enablepersist, persistdays){
var ultags=document.getElementById(treeid).getElementsByTagName("ul")
if (typeof persisteduls[treeid]=="undefined")
persisteduls[treeid]=(enablepersist==true && ddtreemenu.getCookie(treeid)!="")? ddtreemenu.getCookie(treeid).split(",") : ""
for (var i=0; i<ultags.length; i++)
ddtreemenu.buildSubTree(treeid, ultags[i], i)
if (enablepersist==true){ //if enable persist feature
var durationdays=(typeof persistdays=="undefined")? 1 : parseInt(persistdays)
ddtreemenu.dotask(window, function(){ddtreemenu.rememberstate(treeid, durationdays)}, "unload") //save opened UL indexes on body unload
}
}

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
    {
        //alert("1!");
        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
{
    //alert("22!");
    ulelement.setAttribute("rel", "closed")
}
else if (ulelement.getAttribute("rel")=="open") //else if no cookie and this UL has an explicit rel value of "open"
{
    //alert("33!");
    ddtreemenu.expandSubTree(treeid, ulelement) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
}


function Collapsetree(idTree)
{
    var ultags=document.getElementById(idTree).getElementsByTagName("ul");
    for (var i=0; i<ultags.length; i++)
    {
        ultags[i].style.display="none"
        ultags[i].setAttribute("rel", "closed")
    }
}

ulelement.parentNode.onclick=function(e)
{
//alert("Хуясе");
var ultags=document.getElementById(treeid).getElementsByTagName("ul");
var submenu=this.getElementsByTagName("ul")[0]

if(treeid=="treemenu2")
    Collapsetree("treemenu1");
else
    Collapsetree("treemenu2");
    

for (var i=0; i<ultags.length; i++)
{
    if(ultags[i].id!=this.getElementsByTagName("ul")[0].id)
    {
        //alert("12");
        ultags[i].style.display="none"
        ultags[i].setAttribute("rel", "closed")
    }
}

if (submenu.getAttribute("rel")=="closed")
{
    //alert("open");
    submenu.style.display="block"
    submenu.setAttribute("rel", "open")
    ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}
else if (submenu.getAttribute("rel")=="open")
{
    //alert("closed");
    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)
}
}

ddtreemenu.expandSubTree=function(treeid, ulelement)
{   
    //alert("expandSubTree");
    //expand a UL element and any of its parent ULs
    var rootnode=document.getElementById(treeid)
    var currentnode=ulelement
    currentnode.style.display="block"
    currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
    while (currentnode!=rootnode)
    {
        if (currentnode.tagName=="UL")
        { 
            //if parent node is a UL, expand it too
            currentnode.style.display="block"
            currentnode.setAttribute("rel", "open") //indicate it's open
            currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
        }
        currentnode=currentnode.parentNode
    }
}

ddtreemenu.flatten=function(treeid, action)
{ 
    //alert("flatten");
    //expand or contract all UL elements
    var ultags=document.getElementById(treeid).getElementsByTagName("ul")
    for (var i=0; i<ultags.length; i++)
    {
        ultags[i].style.display=(action=="expand")? "block" : "none"
        var relvalue=(action=="expand")? "open" : "closed"
        ultags[i].setAttribute("rel", relvalue)
        ultags[i].parentNode.style.backgroundImage=(action=="expand")? "url("+ddtreemenu.openfolder+")" : "url("+ddtreemenu.closefolder+")"
    }
}

ddtreemenu.rememberstate=function(treeid, durationdays)
{
    
    //store index of opened ULs relative to other ULs in Tree into cookie
    var ultags=document.getElementById(treeid).getElementsByTagName("ul")
    var openuls=new Array()
    for (var i=0; i<ultags.length; i++)
    {
        if (ultags[i].getAttribute("rel")=="open")
        {
            //alert("rememberstate");
            openuls[openuls.length]=i //save the index of the opened UL (relative to the entire list of ULs) as an array element
                
        }
    }
    if (openuls.length==0)
    {   
        //alert("rememberstate - 0");
        //if there are no opened ULs to save/persist
        openuls[0]="none open" //set array value to string to simply indicate all ULs should persist with state being closed
    }
    ddtreemenu.setCookie(treeid, openuls.join(","), durationdays) //populate cookie with value treeid=1,2,3 etc (where 1,2... are the indexes of the opened ULs)
}

////A few utility functions below//////////////////////

ddtreemenu.getCookie=function(Name){ //get cookie value
var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return ""
}

ddtreemenu.setCookie=function(name, value, days){ //set cookei value
var expireDate = new Date()
//set "expstring" to either future or past date, to set or delete cookie, respectively
var expstring=expireDate.setDate(expireDate.getDate()+parseInt(days))
document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}

ddtreemenu.searcharray=function(thearray, value){ //searches an array for the entered value. If found, delete value from array
var isfound=false
for (var i=0; i<thearray.length; i++){
if (thearray[i]==value){
isfound=true
thearray.shift() //delete this element from array for efficiency sake
break
}
}
return isfound
}

ddtreemenu.preventpropagate=function(e){ //prevent action from bubbling upwards
if (typeof e!="undefined")
e.stopPropagation()
else
event.cancelBubble=true
}

ddtreemenu.dotask=function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
}