var persisteduls=new Object()
	var redmenu=new Object()
			
	redmenu.createTree=function(treeid, enablepersist, persistdays){
		var ultags=document.getElementById(treeid).getElementsByTagName("ul")
		if (typeof persisteduls[treeid]=="undefined")
		persisteduls[treeid]=(enablepersist==true && redmenu.getCookie(treeid)!="")? redmenu.getCookie(treeid).split(",") : ""
		for (var i=0; i<ultags.length; i++)
			redmenu.buildSubTree(treeid, ultags[i], i)
		if (enablepersist==true){ //if enable persist feature
		var durationdays=(typeof persistdays=="undefined")? 1 : parseInt(persistdays)
		redmenu.dotask(window, function(){redmenu.rememberstate(treeid, durationdays)}, "unload")
		}
	}
	
	redmenu.buildSubTree=function(treeid, ulelement, index){
		ulelement.parentNode.className="submenu"
		if (typeof persisteduls[treeid]=="object"){ 
			if (redmenu.searcharray(persisteduls[treeid], index)){
				ulelement.setAttribute("title", "open")
				ulelement.style.display="block"
			}
			else
				ulelement.setAttribute("title", "closed")
			}
		else if (ulelement.getAttribute("title")==null || ulelement.getAttribute("title")==false)
			ulelement.setAttribute("title", "closed")
		else if (ulelement.getAttribute("title")=="open") 
			redmenu.expandSubTree(treeid, ulelement)
	ulelement.parentNode.onclick=function(e){
		var submenu=this.getElementsByTagName("ul")[0]
		if (submenu.getAttribute("title")=="closed"){
		submenu.style.display="block"
		submenu.setAttribute("title", "open")		
		}
		else if (submenu.getAttribute("title")=="open"){
		submenu.style.display="none"
		submenu.setAttribute("title", "closed")
		}
		redmenu.preventpropagate(e)
	}

	ulelement.onclick=function(e){
		redmenu.preventpropagate(e)
		}
	}
	
	redmenu.expandSubTree=function(treeid, ulelement){ 
		var rootnode=document.getElementById(treeid)
		var currentnode=ulelement
		currentnode.style.display="block"
		
		while (currentnode!=rootnode){
			if (currentnode.tagName=="UL"){ 
				currentnode.style.display="block"
				currentnode.setAttribute("title", "open") 				
			}
		currentnode=currentnode.parentNode
		}
	}
	
	redmenu.flatten=function(treeid, action){ 
		var ultags=document.getElementById(treeid).getElementsByTagName("ul")
		for (var i=0; i<ultags.length; i++){
		ultags[i].style.display=(action=="rozwin")? "block" : "none"
		var relvalue=(action=="rozwin")? "open" : "closed"
		ultags[i].setAttribute("title", relvalue)
		}
	}
	
	redmenu.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("title")=="open")
		openuls[openuls.length]=i 
		}
		if (openuls.length==0)
		openuls[0]="none open"
		redmenu.setCookie(treeid, openuls.join(","), durationdays) 
	}
	
	redmenu.getCookie=function(Name){ 
		var re=new RegExp(Name+"=[^;]+", "i");
		if (document.cookie.match(re)) 
		return document.cookie.match(re)[0].split("=")[1] 
		return ""
	}
	
	redmenu.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=/";
	}
	
	redmenu.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
	}
	
	redmenu.preventpropagate=function(e){
		if (typeof e!="undefined")
		e.stopPropagation()
		else
		event.cancelBubble=true
	}
	
	redmenu.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)
	}