// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

/*addEvent(window,"load",convertTrees);

function addEvent(o,e,f) {
    if(o.addEventListener) {
        o.addEventListener(e,f,true);
        return true;
    } else if(o.attachEvent) {
        return o.attachEvent("on"+e,f);
    } else { 
        return false;
    }
};*/

function setDefault(name,val) {
    if( typeof(window[name])=="undefined" || window[name]==null ) {
        window[name]=val;
    }
};


function expandTree(treeId) {
    var ul = document.getElementById(treeId);
    if(ul == null){
        return false;
    }
    expandCollapseList(ul,nodeOpenClass);
};

function collapseTree(treeId) {
    var ul = document.getElementById(treeId);
    if(ul == null) {
        return false;
    }
    expandCollapseList(ul,nodeClosedClass);
};

function expandToItem(treeId,itemId) {
    var ul = document.getElementById(treeId);
    if(ul == null) {
        return false;
    }
    var ret = expandCollapseList(ul,nodeOpenClass,itemId);
    if(ret) {
        var o = document.getElementById(itemId);
        if(o.scrollIntoView) {
            o.scrollIntoView(false);
        }
    }
};

function expandCollapseList(ul,cName,itemId) {
    if(!ul.childNodes || ul.childNodes.length==0) { 
        return false;
    }
    for(var itemi=0;itemi<ul.childNodes.length;itemi++) {
        var item = ul.childNodes[itemi];
        if(itemId!=null && item.id==itemId) {
            return true;
        }
        if(item.nodeName == "LI") {
            var subLists = false;
            for(var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
                var sitem = item.childNodes[sitemi];
                if(sitem.nodeName=="UL") {
                    subLists = true;
                    var ret = expandCollapseList(sitem,cName,itemId);
                    if(itemId!=null && ret) {
                        item.className=cName;
                        return true;
                    }
                }
            }
            if(subLists && itemId==null) {
                item.className = cName;
            }
        }
    }
};

function convertTrees() {
    setDefault("treeClass","mktree");
    setDefault("nodeClosedClass","liClosed");
    setDefault("nodeOpenClass","liOpen");
    setDefault("nodeBulletClass","liBullet");
    setDefault("nodeLinkClass","bullet");
    setDefault("preProcessTrees",true);
    if(preProcessTrees) {
        if(!document.createElement) {
            return;
        }
        uls = document.getElementsByTagName("ul");
        for(var uli=0;uli<uls.length;uli++) {
            var ul=uls[uli];
            if(ul.nodeName=="UL" && ul.className==treeClass) {
                processList(ul);
            }
        }
    }
};

var prevedClicked = false;
var isPrevedRequired = false;
function processList(ul) {
    if(!ul.childNodes || ul.childNodes.length==0) {
        return;
    }
    for(var itemi=0;itemi<ul.childNodes.length;itemi++) {
        var item = ul.childNodes[itemi];
        if(item.nodeName == "LI") { 
            var subLists = false;
            for(var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
                var sitem = item.childNodes[sitemi];
                if(sitem.nodeName=="UL") {
                    subLists = true;
                    processList(sitem);
                }
            }
            var s = document.createElement("SPAN");
            var t= '\u00A0';
            s.className = nodeLinkClass;
            if(subLists) {
                if(item.className==null || item.className=="") {
                    item.className = nodeClosedClass;
                }
                if(item.firstChild.nodeName=="#text") {
                    t = t+item.firstChild.nodeValue;
                    item.removeChild(item.firstChild);
                }
                s.onclick = function() {
                    if( prevedClicked == false ) {
                        this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;
                    } else {
                        prevedClicked = false;
                        if( this.parentNode.className != nodeOpenClass ) {
                            this.parentNode.className = nodeOpenClass;
                        }
                    }
                    return false;
                }
                
            } else {
                item.className = nodeBulletClass;
                /*if(item.firstChild.nodeName=="#text") {
                    t = t+item.firstChild.nodeValue;
                    item.removeChild(item.firstChild);
                }*/
                s.onclick = function() {
                    //selectFormation( this );
                    return false;
                }
            }
            /*test.onclick = function() {
                if( isPrevedRequired == true ) {
                    prevedClicked = true;
                    alert( "PREVED" );
                }
            };*/
            item.insertBefore(s,item.firstChild);
        }
    }
};