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

ddtreemenu.closefolder="imgs/mapaweb/closed.gif"
ddtreemenu.openfolder="imgs/mapaweb/open.gif"

ddtreemenu.createTree=function(treeid, enablepersist, persistdays){
//	alert("e");
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++){
//	alert("OK");
	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")
}
}

ddtreemenu.buildSubTree=function(treeid, ulelement, index){
ulelement.parentNode.className="submenu"
if (typeof persisteduls[treeid]=="object"){

if (ddtreemenu.searcharray(persisteduls[treeid], index)){
ulelement.setAttribute("rel", "open")
ulelement.style.display="block"
ulelement.style.visibility="visible"
ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
//alert(ulelement.parentNode.style.backgroundImage)
}
else
	ulelement.setAttribute("rel", "closed")
	
}
else if (ulelement.getAttribute("rel")==null || ulelement.getAttribute("rel")==false){
	ulelement.setAttribute("rel", "closed")

}
else if (ulelement.getAttribute("rel")=="open"){
	ddtreemenu.expandSubTree(treeid, ulelement)
}

ulelement.parentNode.onclick=function(e){
	var submenu=this.getElementsByTagName("ul")[0]
	if (submenu.getAttribute("rel")=="closed"){
	submenu.style.display="block"
	//submenu.style.visibility="visible"
	submenu.setAttribute("rel", "open")
	ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
	}
	else if (submenu.getAttribute("rel")=="open"){
	submenu.style.display="none"
	//submenu.style.visibility="hidden"
	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){
var rootnode=document.getElementById(treeid)
var currentnode=ulelement
currentnode.style.display="block"
//currentnode.style.visibility="visible"
currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
while (currentnode!=rootnode){
if (currentnode.tagName=="UL"){
currentnode.style.display="block"
//currentnode.style.visibility="visible"
currentnode.setAttribute("rel", "open") 
currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}
currentnode=currentnode.parentNode
}
}

ddtreemenu.flatten=function(treeid, action){

var ultags=document.getElementById(treeid).getElementsByTagName("ul")
for (var i=0; i<ultags.length; i++){
//ultags[i].style.visibility=(action=="expand")? "visible" : "hidden"	
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){
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")
openuls[openuls.length]=i
}
if (openuls.length==0)
openuls[0]="none open"
ddtreemenu.setCookie(treeid, openuls.join(","), durationdays)
}

ddtreemenu.getCookie=function(Name){
var re=new RegExp(Name+"=[^;]+", "i");
if (document.cookie.match(re)) 
return document.cookie.match(re)[0].split("=")[1]
return ""
}

ddtreemenu.setCookie=function(name, value, days){
var expireDate = new Date()
var expstring=expireDate.setDate(expireDate.getDate()+parseInt(days))
document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}

ddtreemenu.searcharray=function(thearray, value){ 
var isfound=false
for (var i=0; i<thearray.length; i++){
if (thearray[i]==value){
isfound=true
thearray.shift()
break
}
}
return isfound
}

ddtreemenu.preventpropagate=function(e){ 
if (typeof e!="undefined")
e.stopPropagation()
else
event.cancelBubble=true
}

ddtreemenu.dotask=function(target, functionref, tasktype){
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
}