//Aug 25, 08': Custom mod that adds ddtreemenu.manualexpand=() http://www.dynamicdrive.com/forums/showthread.php?t=35908

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

ddtreemenu.closefolder="codelibrary/js/simpletreemenu/images/closed.gif" //set image path to "closed" folder image
ddtreemenu.openfolder="codelibrary/js/simpletreemenu/images/open.gif" //set image path to "open" folder image
ddtreemenu.openMode="unique";	// added by Quizna


//////////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
			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]
		var isopened = false
		if (submenu.getAttribute("rel")=="closed"){
			submenu.style.display="block"
			submenu.setAttribute("rel", "open")
			ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
isopened = true
		}
		else if (submenu.getAttribute("rel")=="open"){
			submenu.style.display="none"
			submenu.setAttribute("rel", "closed")
			ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")"
		}
		ddtreemenu.preventpropagate(e)
		
		//// by Quizna (2008-11-18) to open unique node (show only a single node) [beg]
		if (ddtreemenu.openMode=="unique" && isopened==true){
			var ultags=document.getElementById(treeid).getElementsByTagName("ul")
			for (var i=0; i<ultags.length; i++){
				if (ultags[i].getAttribute("rel")=="open"){
					ultags[i].style.display="none"
					var relvalue="closed"
					ultags[i].setAttribute("rel", relvalue)
					ultags[i].parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")"
				}
			}
			ddtreemenu.expandSubTree(treeid, ultags[index]) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
		}
		//// by Quizna (2008-11-18) to open unique node (show only a single node) [end]
	}
	ulelement.onclick = function(e){  // on click end sub-element (w/o subMenu)
//alert(index +" ++ "+ulelement[index]+ " ++ "+e);
		ddtreemenu.preventpropagate(e)
	}
}

ddtreemenu.manualexpand = function(subliid)
{
	var submenu=document.getElementById(subliid).getElementsByTagName("ul")[0]
	submenu.style.display="block"
	submenu.setAttribute("rel", "open")
	submenu.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}

ddtreemenu.expandSubTree = function(treeid, ulelement)  //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) //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")
		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) //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)
}



//// Quizna's added functions /////////////////////////
var startAt = 0;
var findPrevStr = "";
ddtreemenu.find = function(treeid, keyword) // find keyward and open its node
{
	ddtreemenu.flatten(treeid, 'contract') 	// contract all UL elements before search
	
	// get all <a...>..</a> tag items
	var atags=document.getElementById(treeid).getElementsByTagName("A");
	if (findPrevStr != keyword){   startAt = 0;  }	// if new keyword search, reset start position
	var isFound = false;
	for (var i=0; i<atags.length; i++){
		atags[i].style.backgroundColor="";  // "#FFFFFF";
//		if (atags[i].style.backgroundColor=="#FF0000"){  atags[i].style.backgroundColor="#FFFFFF";  }
		//if (i > startAt)
		{
			var elename = atags[i].innerHTML;
			if (elename.toLowerCase().indexOf(keyword.toLowerCase()) > -1){
				startAt = i;
				isFound = true;
				atags[i].style.backgroundColor="#90E040";
	//			atags[i].innerHTML.focus();
				ddtreemenu.expandSubTree(treeid, atags[startAt].parentNode.parentNode) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
	
	//			break;
			}
		}
	}
	if (isFound == false){  startAt = 0;  }  // if reached the bottom, start over from beginning
/*	
	// be sure to close all open nodes, then open only the found element and its parents
	var ultags=document.getElementById(treeid).getElementsByTagName("ul")
	for (var i=0; i<ultags.length; i++){
		if (ultags[i].getAttribute("rel")=="open"){
			ultags[i].style.display="none"
			var relvalue="closed"
			ultags[i].setAttribute("rel", relvalue)
			ultags[i].parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")"
		}
	}
*/
//	ddtreemenu.expandSubTree(treeid, atags[startAt].parentNode.parentNode) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
//	startAt += 1;  // prepare for the next find
//	findPrevStr = keyword;
}




//// 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)
}