/*** TREEVIEW ***/

if (typeof YAHOO == "undefined") {
    var YAHOO = {};
}

YAHOO.namespace = function() {
    var a=arguments, o=null, i, j, d;
    for (i=0; i<a.length; ++i) {
        d=a[i].split(".");
        o=YAHOO;

        for (j=(d[0] == "YAHOO") ? 1 : 0; j<d.length; ++j) {
            o[d[j]]=o[d[j]] || {};
            o=o[d[j]];
        }
    }

    return o;
};

YAHOO.log = function(msg, cat, src) {
    var l=YAHOO.widget.Logger;
    if(l && l.log) {
        return l.log(msg, cat, src);
    } else {
        return false;
    }
};

YAHOO.extend = function(subc, superc, overrides) {
    var F = function() {};
    F.prototype=superc.prototype;
    subc.prototype=new F();
    subc.prototype.constructor=subc;
    subc.superclass=superc.prototype;
    if (superc.prototype.constructor == Object.prototype.constructor) {
        superc.prototype.constructor=superc;
    }

    if (overrides) {
        for (var i in overrides) {
            subc.prototype[i]=overrides[i];
        }
    }
};

YAHOO.augment = function(r, s) {
    var rp=r.prototype, sp=s.prototype, a=arguments, i, p;
    if (a[2]) {
        for (i=2; i<a.length; ++i) {
            rp[a[i]] = sp[a[i]];
        }
    } else {
        for (p in sp) { 
            if (!rp[p]) {
                rp[p] = sp[p];
            }
        }
    }
};

YAHOO.namespace("util", "widget", "example");

/******************************************************************************/

YAHOO.util.CustomEvent = function(type, oScope, silent, signature) {

    this.type = type;
    this.scope = oScope || window;
    this.silent = silent;
    this.signature = signature || YAHOO.util.CustomEvent.LIST;
    this.subscribers = [];

    if (!this.silent) {
    }

    var onsubscribeType = "_YUICEOnSubscribe";

    if (type !== onsubscribeType) {
        this.subscribeEvent = new YAHOO.util.CustomEvent(onsubscribeType, this, true);
    } 
};

YAHOO.util.CustomEvent.LIST = 0;
YAHOO.util.CustomEvent.FLAT = 1;
YAHOO.util.CustomEvent.prototype = {

    subscribe: function(fn, obj, override) {
        if (this.subscribeEvent) {
            this.subscribeEvent.fire(fn, obj, override);
        }

        this.subscribers.push( new YAHOO.util.Subscriber(fn, obj, override) );
    },

    unsubscribe: function(fn, obj) {
        var found = false;
        for (var i=0, len=this.subscribers.length; i<len; ++i) {
            var s = this.subscribers[i];
            if (s && s.contains(fn, obj)) {
                this._delete(i);
                found = true;
            }
        }

        return found;
    },

    fire: function() {
        var len=this.subscribers.length;
        if (!len && this.silent) {
            return true;
        }

        var args=[], ret=true, i;

        for (i=0; i<arguments.length; ++i) {
            args.push(arguments[i]);
        }

        var argslength = args.length;

        if (!this.silent) {
        }

        for (i=0; i<len; ++i) {
            var s = this.subscribers[i];
            if (s) {
                if (!this.silent) {
                }

                var scope = s.getScope(this.scope);

                if (this.signature == YAHOO.util.CustomEvent.FLAT) {
                    var param = null;
                    if (args.length > 0) {
                        param = args[0];
                    }
                    ret = s.fn.call(scope, param, s.obj);
                } else {
                    ret = s.fn.call(scope, this.type, args, s.obj);
                }
                if (false === ret) {
                    if (!this.silent) {
                    }

                    //break;
                    return false;
                }
            }
        }

        return true;
    },

    unsubscribeAll: function() {
        for (var i=0, len=this.subscribers.length; i<len; ++i) {
            this._delete(len - 1 - i);
        }
    },

    _delete: function(index) {
        var s = this.subscribers[index];
        if (s) {
            delete s.fn;
            delete s.obj;
        }

        this.subscribers.splice(index, 1);
    },

    toString: function() {
         return "CustomEvent: " + "'" + this.type  + "', " + 
             "scope: " + this.scope;

    }
};

YAHOO.util.Subscriber = function(fn, obj, override) {

    this.fn = fn;
    this.obj = obj || null;
    this.override = override;
};

YAHOO.util.Subscriber.prototype.getScope = function(defaultScope) {
    if (this.override) {
        if (this.override === true) {
            return this.obj;
        } else {
            return this.override;
        }
    }
    return defaultScope;
};

YAHOO.util.Subscriber.prototype.contains = function(fn, obj) {
    if (obj) {
        return (this.fn == fn && this.obj == obj);
    } else {
        return (this.fn == fn);
    }
};

YAHOO.util.Subscriber.prototype.toString = function() {
    return "Subscriber { obj: " + (this.obj || "")  + 
           ", override: " +  (this.override || "no") + " }";
};

if (!YAHOO.util.Event) {

    YAHOO.util.Event = function() {

        var loadComplete =  false;
        var listeners = [];
        var unloadListeners = [];
        var legacyEvents = [];
        var legacyHandlers = [];
        var retryCount = 0;
        var onAvailStack = [];
        var legacyMap = [];
        var counter = 0;

        return {

            POLL_RETRYS: 200,
            POLL_INTERVAL: 20,
            EL: 0,
            TYPE: 1,
            FN: 2,
            WFN: 3,
            OBJ: 3,
            ADJ_SCOPE: 4,
            isSafari: (/Safari|Konqueror|KHTML/gi).test(navigator.userAgent),
            isIE: (!this.isSafari && !navigator.userAgent.match(/opera/gi) && 
                    navigator.userAgent.match(/msie/gi)),
            _interval: null,
            startInterval: function() {
                if (!this._interval) {
                    var self = this;
                    var callback = function() { self._tryPreloadAttach(); };
                    this._interval = setInterval(callback, this.POLL_INTERVAL);
                    // this.timeout = setTimeout(callback, i);
                }
            },

            onAvailable: function(p_id, p_fn, p_obj, p_override) {
                onAvailStack.push( { id:         p_id, 
                                     fn:         p_fn, 
                                     obj:        p_obj, 
                                     override:   p_override, 
                                     checkReady: false    } );

                retryCount = this.POLL_RETRYS;
                this.startInterval();
            },

            onContentReady: function(p_id, p_fn, p_obj, p_override) {
                onAvailStack.push( { id:         p_id, 
                                     fn:         p_fn, 
                                     obj:        p_obj, 
                                     override:   p_override,
                                     checkReady: true      } );

                retryCount = this.POLL_RETRYS;
                this.startInterval();
            },

            addListener: function(el, sType, fn, obj, override) {

                if (!fn || !fn.call) {
                    return false;
                }

                if ( this._isValidCollection(el)) {
                    var ok = true;
                    for (var i=0,len=el.length; i<len; ++i) {
                        ok = this.on(el[i], 
                                       sType,
                                       fn, 
                                       obj, 
                                       override) && ok;
                    }
                    return ok;

                } else if (typeof el == "string") {
                    var oEl = this.getEl(el);
                    if (oEl) {
                        el = oEl;
                    } else {
                        this.onAvailable(el, function() {
                           YAHOO.util.Event.on(el, sType, fn, obj, override);
                        });

                        return true;
                    }
                }

                if (!el) {
                    return false;
                }

                if ("unload" == sType && obj !== this) {
                    unloadListeners[unloadListeners.length] =
                            [el, sType, fn, obj, override];
                    return true;
                }

                var scope = el;
                if (override) {
                    if (override === true) {
                        scope = obj;
                    } else {
                        scope = override;
                    }
                }

                var wrappedFn = function(e) {
                        return fn.call(scope, YAHOO.util.Event.getEvent(e), 
                                obj);
                    };

                var li = [el, sType, fn, wrappedFn, scope];
                var index = listeners.length;
                listeners[index] = li;

                if (this.useLegacyEvent(el, sType)) {
                    var legacyIndex = this.getLegacyIndex(el, sType);

                    if ( legacyIndex == -1 || 
                                el != legacyEvents[legacyIndex][0] ) {

                        legacyIndex = legacyEvents.length;
                        legacyMap[el.id + sType] = legacyIndex;

                        legacyEvents[legacyIndex] = 
                            [el, sType, el["on" + sType]];
                        legacyHandlers[legacyIndex] = [];

                        el["on" + sType] = 
                            function(e) {
                                YAHOO.util.Event.fireLegacyEvent(
                                    YAHOO.util.Event.getEvent(e), legacyIndex);
                            };
                    }

                    //legacyHandlers[legacyIndex].push(index);
                    legacyHandlers[legacyIndex].push(li);

                } else {
                    this._simpleAdd(el, sType, wrappedFn, false);
                }

                return true;
                
            },

            fireLegacyEvent: function(e, legacyIndex) {
                var ok = true;

                var le = legacyHandlers[legacyIndex];
                for (var i=0,len=le.length; i<len; ++i) {
                    var li = le[i];
                    if ( li && li[this.WFN] ) {
                        var scope = li[this.ADJ_SCOPE];
                        var ret = li[this.WFN].call(scope, e);
                        ok = (ok && ret);
                    }
                }

                return ok;
            },

            getLegacyIndex: function(el, sType) {
                var key = this.generateId(el) + sType;
                if (typeof legacyMap[key] == "undefined") { 
                    return -1;
                } else {
                    return legacyMap[key];
                }
            },

            useLegacyEvent: function(el, sType) {
                if (!el.addEventListener && !el.attachEvent) {
                    return true;
                } else if (this.isSafari) {
                    if ("click" == sType || "dblclick" == sType) {
                        return true;
                    }
                }
                return false;
            },
                    
            removeListener: function(el, sType, fn) {
                var i, len;

                if (typeof el == "string") {
                    el = this.getEl(el);
                } else if ( this._isValidCollection(el)) {
                    var ok = true;
                    for (i=0,len=el.length; i<len; ++i) {
                        ok = ( this.removeListener(el[i], sType, fn) && ok );
                    }
                    return ok;
                }

                if (!fn || !fn.call) {
                    //return false;
                    return this.purgeElement(el, false, sType);
                }

                if ("unload" == sType) {

                    for (i=0, len=unloadListeners.length; i<len; i++) {
                        var li = unloadListeners[i];
                        if (li && 
                            li[0] == el && 
                            li[1] == sType && 
                            li[2] == fn) {
                                unloadListeners.splice(i, 1);
                                return true;
                        }
                    }

                    return false;
                }

                var cacheItem = null;

                var index = arguments[3];
  
                if ("undefined" == typeof index) {
                    index = this._getCacheIndex(el, sType, fn);
                }

                if (index >= 0) {
                    cacheItem = listeners[index];
                }

                if (!el || !cacheItem) {
                    return false;
                }

                if (this.useLegacyEvent(el, sType)) {
                    var legacyIndex = this.getLegacyIndex(el, sType);
                    var llist = legacyHandlers[legacyIndex];
                    if (llist) {
                        for (i=0, len=llist.length; i<len; ++i) {
                            li = llist[i];
                            if (li && 
                                li[this.EL] == el && 
                                li[this.TYPE] == sType && 
                                li[this.FN] == fn) {
                                    llist.splice(i, 1);
                                    break;
                            }
                        }
                    }

                } else {
                    this._simpleRemove(el, sType, cacheItem[this.WFN], false);
                }

                delete listeners[index][this.WFN];
                delete listeners[index][this.FN];
                listeners.splice(index, 1);

                return true;

            },
            getTarget: function(ev, resolveTextNode) {
                var t = ev.target || ev.srcElement;
                return this.resolveTextNode(t);
            },

            resolveTextNode: function(node) {
                // if (node && node.nodeName && 
                        // "#TEXT" == node.nodeName.toUpperCase()) {
                if (node && 3 == node.nodeType) {
                    return node.parentNode;
                } else {
                    return node;
                }
            },

            getPageX: function(ev) {
                var x = ev.pageX;
                if (!x && 0 !== x) {
                    x = ev.clientX || 0;

                    if ( this.isIE ) {
                        x += this._getScrollLeft();
                    }
                }

                return x;
            },

            getPageY: function(ev) {
                var y = ev.pageY;
                if (!y && 0 !== y) {
                    y = ev.clientY || 0;

                    if ( this.isIE ) {
                        y += this._getScrollTop();
                    }
                }

                return y;
            },

            getXY: function(ev) {
                return [this.getPageX(ev), this.getPageY(ev)];
            },

            getRelatedTarget: function(ev) {
                var t = ev.relatedTarget;
                if (!t) {
                    if (ev.type == "mouseout") {
                        t = ev.toElement;
                    } else if (ev.type == "mouseover") {
                        t = ev.fromElement;
                    }
                }

                return this.resolveTextNode(t);
            },

            getTime: function(ev) {
                if (!ev.time) {
                    var t = new Date().getTime();
                    try {
                        ev.time = t;
                    } catch(e) { 
                        return t;
                    }
                }

                return ev.time;
            },

            stopEvent: function(ev) {
                this.stopPropagation(ev);
                this.preventDefault(ev);
            },

            stopPropagation: function(ev) {
                if (ev.stopPropagation) {
                    ev.stopPropagation();
                } else {
                    ev.cancelBubble = true;
                }
            },

            preventDefault: function(ev) {
                if (ev.preventDefault) {
                    ev.preventDefault();
                } else {
                    ev.returnValue = false;
                }
            },
             
            getEvent: function(e) {
                var ev = e || window.event;

                if (!ev) {
                    var c = this.getEvent.caller;
                    while (c) {
                        ev = c.arguments[0];
                        if (ev && Event == ev.constructor) {
                            break;
                        }
                        c = c.caller;
                    }
                }

                return ev;
            },

            getCharCode: function(ev) {
                return ev.charCode || ev.keyCode || 0;
            },

            _getCacheIndex: function(el, sType, fn) {
                for (var i=0,len=listeners.length; i<len; ++i) {
                    var li = listeners[i];
                    if ( li                 && 
                         li[this.FN] == fn  && 
                         li[this.EL] == el  && 
                         li[this.TYPE] == sType ) {
                        return i;
                    }
                }

                return -1;
            },

            generateId: function(el) {
                var id = el.id;

                if (!id) {
                    id = "yuievtautoid-" + counter;
                    ++counter;
                    el.id = id;
                }

                return id;
            },

            _isValidCollection: function(o) {
                // this.logger.debug(o.constructor.toString())
                // this.logger.debug(typeof o)

                return ( o                    && // o is something
                         o.length             && // o is indexed
                         typeof o != "string" && // o is not a string
                         !o.tagName           && // o is not an HTML element
                         !o.alert             && // o is not a window
                         typeof o[0] != "undefined" );

            },

            elCache: {},

            getEl: function(id) {
                return document.getElementById(id);
            },

            clearCache: function() { },

            _load: function(e) {
                loadComplete = true;
                var EU = YAHOO.util.Event;
                // Remove the listener to assist with the IE memory issue, but not
                // for other browsers because FF 1.0x does not like it.
                if (this.isIE) {
                    EU._simpleRemove(window, "load", EU._load);
                }
            },

            _tryPreloadAttach: function() {

                if (this.locked) {
                    return false;
                }

                this.locked = true;

                var tryAgain = !loadComplete;
                if (!tryAgain) {
                    tryAgain = (retryCount > 0);
                }

                var notAvail = [];
                for (var i=0,len=onAvailStack.length; i<len ; ++i) {
                    var item = onAvailStack[i];
                    if (item) {
                        var el = this.getEl(item.id);

                        if (el) {

                            if ( !item.checkReady || 
                                    loadComplete || 
                                    el.nextSibling ||
                                    (document && document.body) ) {

                                var scope = el;
                                if (item.override) {
                                    if (item.override === true) {
                                        scope = item.obj;
                                    } else {
                                        scope = item.override;
                                    }
                                }
                                item.fn.call(scope, item.obj);
                                delete onAvailStack[i];
                            }
                        } else {
                            notAvail.push(item);
                        }
                    }
                }

                retryCount = (notAvail.length === 0) ? 0 : retryCount - 1;

                if (tryAgain) {
                    this.startInterval();
                } else {
                    clearInterval(this._interval);
                    this._interval = null;
                }

                this.locked = false;

                return true;

            },

            purgeElement: function(el, recurse, sType) {
                var elListeners = this.getListeners(el, sType);
                if (elListeners) {
                    for (var i=0,len=elListeners.length; i<len ; ++i) {
                        var l = elListeners[i];
                        // can't use the index on the changing collection
                        //this.removeListener(el, l.type, l.fn, l.index);
                        this.removeListener(el, l.type, l.fn);
                    }
                }

                if (recurse && el && el.childNodes) {
                    for (i=0,len=el.childNodes.length; i<len ; ++i) {
                        this.purgeElement(el.childNodes[i], recurse, sType);
                    }
                }
            },

            getListeners: function(el, sType) {
                var elListeners = [];
                if (listeners && listeners.length > 0) {
                    for (var i=0,len=listeners.length; i<len ; ++i) {
                        var l = listeners[i];
                        if ( l  && l[this.EL] === el && 
                                (!sType || sType === l[this.TYPE]) ) {
                            elListeners.push({
                                type:   l[this.TYPE],
                                fn:     l[this.FN],
                                obj:    l[this.OBJ],
                                adjust: l[this.ADJ_SCOPE],
                                index:  i
                            });
                        }
                    }
                }

                return (elListeners.length) ? elListeners : null;
            },

            _unload: function(e) {

                var EU = YAHOO.util.Event, i, j, l, len, index;

                for (i=0,len=unloadListeners.length; i<len; ++i) {
                    l = unloadListeners[i];
                    if (l) {
                        var scope = window;
                        if (l[EU.ADJ_SCOPE]) {
                            if (l[EU.ADJ_SCOPE] === true) {
                                scope = l[EU.OBJ];
                            } else {
                                scope = l[EU.ADJ_SCOPE];
                            }
                        }
                        l[EU.FN].call(scope, EU.getEvent(e), l[EU.OBJ] );
                        delete unloadListeners[i];
                        l=null;
                        scope=null;
                    }
                }

                if (listeners && listeners.length > 0) {
                    j = listeners.length;
                    while (j) {
                        index = j-1;
                        l = listeners[index];
                        if (l) {
                            EU.removeListener(l[EU.EL], l[EU.TYPE], 
                                    l[EU.FN], index);
                        } 
                        j = j - 1;
                    }
                    l=null;

                    EU.clearCache();
                }

                for (i=0,len=legacyEvents.length; i<len; ++i) {
                    delete legacyEvents[i][0];
                    delete legacyEvents[i];
                }

                EU._simpleRemove(window, "unload", EU._unload);

            },

            _getScrollLeft: function() {
                return this._getScroll()[1];
            },

            _getScrollTop: function() {
                return this._getScroll()[0];
            },

            _getScroll: function() {
                var dd = document.documentElement, db = document.body;
                if (dd && (dd.scrollTop || dd.scrollLeft)) {
                    return [dd.scrollTop, dd.scrollLeft];
                } else if (db) {
                    return [db.scrollTop, db.scrollLeft];
                } else {
                    return [0, 0];
                }
            },

            _simpleAdd: function () {
                if (window.addEventListener) {
                    return function(el, sType, fn, capture) {
                        el.addEventListener(sType, fn, (capture));
                    };
                } else if (window.attachEvent) {
                    return function(el, sType, fn, capture) {
                        el.attachEvent("on" + sType, fn);
                    };
                } else {
                    return function(){};
                }
            }(),

            _simpleRemove: function() {
                if (window.removeEventListener) {
                    return function (el, sType, fn, capture) {
                        el.removeEventListener(sType, fn, (capture));
                    };
                } else if (window.detachEvent) {
                    return function (el, sType, fn) {
                        el.detachEvent("on" + sType, fn);
                    };
                } else {
                    return function(){};
                }
            }()
        };

    }();

    (function() {
        var EU = YAHOO.util.Event;

        EU.on = EU.addListener;

        // YAHOO.mix(EU, YAHOO.util.EventProvider.prototype);
        // EU.createEvent("DOMContentReady");
        // EU.subscribe("DOMContentReady", EU._load);

        if (document && document.body) {
            EU._load();
        } else {
            // EU._simpleAdd(document, "DOMContentLoaded", EU._load);
            EU._simpleAdd(window, "load", EU._load);
        }
        EU._simpleAdd(window, "unload", EU._unload);
        EU._tryPreloadAttach();
    })();
}

YAHOO.util.EventProvider = function() { };

YAHOO.util.EventProvider.prototype = {

    __yui_events: null,
    __yui_subscribers: null,
    
    subscribe: function(p_type, p_fn, p_obj, p_override) {

        this.__yui_events = this.__yui_events || {};
        var ce = this.__yui_events[p_type];

        if (ce) {
            ce.subscribe(p_fn, p_obj, p_override);
        } else {
            this.__yui_subscribers = this.__yui_subscribers || {};
            var subs = this.__yui_subscribers;
            if (!subs[p_type]) {
                subs[p_type] = [];
            }
            subs[p_type].push(
                { fn: p_fn, obj: p_obj, override: p_override } );
        }
    },

    unsubscribe: function(p_type, p_fn, p_obj) {
        this.__yui_events = this.__yui_events || {};
        var ce = this.__yui_events[p_type];
        if (ce) {
            return ce.unsubscribe(p_fn, p_obj);
        } else {
            return false;
        }
    },

    createEvent: function(p_type, p_config) {

        this.__yui_events = this.__yui_events || {};
        var opts = p_config || {};
        var events = this.__yui_events;

        if (events[p_type]) {
        } else {

            var scope  = opts.scope  || this;
            var silent = opts.silent || null;

            var ce = new YAHOO.util.CustomEvent(p_type, scope, silent,
                    YAHOO.util.CustomEvent.FLAT);
            events[p_type] = ce;

            if (opts.onSubscribeCallback) {
                ce.subscribeEvent.subscribe(opts.onSubscribeCallback);
            }

            this.__yui_subscribers = this.__yui_subscribers || {};
            var qs = this.__yui_subscribers[p_type];

            if (qs) {
                for (var i=0; i<qs.length; ++i) {
                    ce.subscribe(qs[i].fn, qs[i].obj, qs[i].override);
                }
            }
        }

        return events[p_type];
    },

    fireEvent: function(p_type, arg1, arg2, etc) {

        this.__yui_events = this.__yui_events || {};
        var ce = this.__yui_events[p_type];

        if (ce) {
            var args = [];
            for (var i=1; i<arguments.length; ++i) {
                args.push(arguments[i]);
            }
            return ce.fire.apply(ce, args);
        } else {
            return null;
        }
    },

    hasEvent: function(type) {
        if (this.__yui_events) {
            if (this.__yui_events[type]) {
                return true;
            }
        }
        return false;
    }

};

/******************************************************************************/

YAHOO.widget.TreeView = function(id) {
    if (id) { this.init(id); }
};

YAHOO.widget.TreeView.prototype = {

    id: null,
    _el: null,
    _nodes: null,
    locked: false,
    _expandAnim: null,
    _collapseAnim: null,
    _animCount: 0,
    maxAnim: 2,
    setExpandAnim: function(type) {
        if (YAHOO.widget.TVAnim.isValid(type)) {
            this._expandAnim = type;
        }
    },

    setCollapseAnim: function(type) {
        if (YAHOO.widget.TVAnim.isValid(type)) {
            this._collapseAnim = type;
        }
    },

    animateExpand: function(el, node) {

        if (this._expandAnim && this._animCount < this.maxAnim) {
            // this.locked = true;
            var tree = this;
            var a = YAHOO.widget.TVAnim.getAnim(this._expandAnim, el, 
                            function() { tree.expandComplete(node); });
            if (a) { 
                ++this._animCount;
                this.fireEvent("animStart", {
                        "node": node, 
                        "type": "expand"
                    });
                a.animate();
            }

            return true;
        }

        return false;
    },

    animateCollapse: function(el, node) {

        if (this._collapseAnim && this._animCount < this.maxAnim) {
            // this.locked = true;
            var tree = this;
            var a = YAHOO.widget.TVAnim.getAnim(this._collapseAnim, el, 
                            function() { tree.collapseComplete(node); });
            if (a) { 
                ++this._animCount;
                this.fireEvent("animStart", {
                        "node": node, 
                        "type": "collapse"
                    });
                a.animate();
            }

            return true;
        }

        return false;
    },

    expandComplete: function(node) {
        --this._animCount;
        this.fireEvent("animComplete", {
                "node": node, 
                "type": "expand"
            });
        // this.locked = false;
    },

    collapseComplete: function(node) {
        --this._animCount;
        this.fireEvent("animComplete", {
                "node": node, 
                "type": "collapse"
            });
        // this.locked = false;
    },

    init: function(id) {

        this.id = id;

        if ("string" !== typeof id) {
            this._el = id;
            this.id = this.generateId(id);
        }

        this.createEvent("animStart", this);
        this.createEvent("animComplete", this);
        this.createEvent("collapse", this);
        this.createEvent("expand", this);

        this._nodes = [];

        YAHOO.widget.TreeView.trees[this.id] = this;

        this.root = new YAHOO.widget.RootNode(this);

    },

    draw: function() {
        var html = this.root.getHtml();
        this.getEl().innerHTML = html;
        this.firstDraw = false;
    },

    getEl: function() {
        if (! this._el) {
            this._el = document.getElementById(this.id);
        }
        return this._el;
    },

    regNode: function(node) {
        this._nodes[node.index] = node;
    },

    getRoot: function() {
        return this.root;
    },

    setDynamicLoad: function(fnDataLoader, iconMode) { 
        this.root.setDynamicLoad(fnDataLoader, iconMode);
    },

    expandAll: function() { 
        if (!this.locked) {
            this.root.expandAll(); 
        }
    },

    collapseAll: function() { 
        if (!this.locked) {
            this.root.collapseAll(); 
        }
    },

    getNodeByIndex: function(nodeIndex) {
        var n = this._nodes[nodeIndex];
        return (n) ? n : null;
    },

    getNodeByProperty: function(property, value) {
        for (var i in this._nodes) {
            var n = this._nodes[i];
            if (n.data && value == n.data[property]) {
                return n;
            }
        }

        return null;
    },

    getNodesByProperty: function(property, value) {
        var values = [];
        for (var i in this._nodes) {
            var n = this._nodes[i];
            if (n.data && value == n.data[property]) {
                values.push(n);
            }
        }

        return (values.length) ? values : null;
    },

    removeNode: function(node, autoRefresh) { 

        if (node.isRoot()) {
            return false;
        }

        var p = node.parent;
        if (p.parent) {
            p = p.parent;
        }

        this._deleteNode(node);

        if (autoRefresh && p && p.childrenRendered) {
            p.refresh();
        }

        return true;
    },

    removeChildren: function(node) { 
        while (node.children.length) {
             this._deleteNode(node.children[0]);
        }

        node.childrenRendered = false;
        node.dynamicLoadComplete = false;
        if (node.expanded) {
            node.collapse();
        } else {
            node.updateIcon();
        }
    },

    _deleteNode: function(node) { 
        this.removeChildren(node);
        this.popNode(node);
    },

    popNode: function(node) { 
        var p = node.parent;

        var a = [];

        for (var i=0, len=p.children.length;i<len;++i) {
            if (p.children[i] != node) {
                a[a.length] = p.children[i];
            }
        }

        p.children = a;
        p.childrenRendered = false;

        if (node.previousSibling) {
            node.previousSibling.nextSibling = node.nextSibling;
        }

        if (node.nextSibling) {
            node.nextSibling.previousSibling = node.previousSibling;
        }

        node.parent = null;
        node.previousSibling = null;
        node.nextSibling = null;
        node.tree = null;

        delete this._nodes[node.index];
    },

    toString: function() {
        return "TreeView " + this.id;
    },

    generateId: function(el) {
        var id = el.id;

        if (!id) {
            id = "yui-tv-auto-id-" + YAHOO.widget.TreeView.counter;
            ++YAHOO.widget.TreeView.counter;
        }

        return id;
    },

    onExpand: function(node) { },

    onCollapse: function(node) { }

};

YAHOO.augment(YAHOO.widget.TreeView, YAHOO.util.EventProvider);
YAHOO.widget.TreeView.nodeCount = 0;
YAHOO.widget.TreeView.trees = [];
YAHOO.widget.TreeView.counter = 0;
YAHOO.widget.TreeView.getTree = function(treeId) {
    var t = YAHOO.widget.TreeView.trees[treeId];
    return (t) ? t : null;
};

YAHOO.widget.TreeView.getNode = function(treeId, nodeIndex) {
    var t = YAHOO.widget.TreeView.getTree(treeId);
    return (t) ? t.getNodeByIndex(nodeIndex) : null;
};

YAHOO.widget.TreeView.addHandler = function (el, sType, fn) {
    if (el.addEventListener) {
        el.addEventListener(sType, fn, false);
    } else if (el.attachEvent) {
        el.attachEvent("on" + sType, fn);
    }
};

YAHOO.widget.TreeView.removeHandler = function (el, sType, fn) {
    if (el.removeEventListener) {
        el.removeEventListener(sType, fn, false);
    } else if (el.detachEvent) {
        el.detachEvent("on" + sType, fn);
    }
};

YAHOO.widget.TreeView.preload = function(prefix) {
    prefix = prefix || "ygtv";
    var styles = ["tn","tm","tmh","tp","tph","ln","lm","lmh","lp","lph","loading"];

    var sb = [];
    
    for (var i = 0; i < styles.length; ++i) { 
        sb[sb.length] = '<span class="' + prefix + styles[i] + '">&#160;</span>';
    }

    var f = document.createElement("div");
    var s = f.style;
    s.position = "absolute";
    s.top = "-1000px";
    s.left = "-1000px";
    f.innerHTML = sb.join("");

    document.body.appendChild(f);

    YAHOO.widget.TreeView.removeHandler(window, 
                "load", YAHOO.widget.TreeView.preload);

};

YAHOO.widget.TreeView.addHandler(window, 
                "load", YAHOO.widget.TreeView.preload);

YAHOO.widget.Node = function(oData, oParent, expanded) {
    if (oData) { this.init(oData, oParent, expanded); }
};

YAHOO.widget.Node.prototype = {

    index: 0,
    children: null,
    tree: null,
    data: null,
    parent: null,
    depth: -1,
    href: null,
    target: "_self",
    expanded: false,
    multiExpand: true,
    renderHidden: false,
    childrenRendered: false,
    dynamicLoadComplete: false,
    previousSibling: null,
    nextSibling: null,
    _dynLoad: false,
    dataLoader: null,
    isLoading: false,
    hasIcon: true,
    iconMode: 0,
    _type: "Node",

    /*
    spacerPath: "http://us.i1.yimg.com/us.yimg.com/i/space.gif",
    expandedText: "Expanded",
    collapsedText: "Collapsed",
    loadingText: "Loading",
    */

    init: function(oData, oParent, expanded) {

        this.data       = oData;
        this.children   = [];
        this.index      = YAHOO.widget.TreeView.nodeCount;
        ++YAHOO.widget.TreeView.nodeCount;
        this.expanded   = expanded;

        this.createEvent("parentChange", this);

        if (oParent) {
            oParent.appendChild(this);
        }
    },

    applyParent: function(parentNode) {
        if (!parentNode) {
            return false;
        }

        this.tree   = parentNode.tree;
        this.parent = parentNode;
        this.depth  = parentNode.depth + 1;

        if (!this.href) {
            this.href = "javascript:" + this.getToggleLink();
        }

        if (! this.multiExpand) {
            this.multiExpand = parentNode.multiExpand;
        }

        this.tree.regNode(this);
        parentNode.childrenRendered = false;

        // cascade update existing children
        for (var i=0, len=this.children.length;i<len;++i) {
            this.children[i].applyParent(this);
        }

        this.fireEvent("parentChange");

        return true;
    },

    appendChild: function(childNode) {
        if (this.hasChildren()) {
            var sib = this.children[this.children.length - 1];
            sib.nextSibling = childNode;
            childNode.previousSibling = sib;
        }
        this.children[this.children.length] = childNode;
        childNode.applyParent(this);

        return childNode;
    },

    appendTo: function(parentNode) {
        return parentNode.appendChild(this);
    },

    insertBefore: function(node) {
        var p = node.parent;
        if (p) {

            if (this.tree) {
                this.tree.popNode(this);
            }

            var refIndex = node.isChildOf(p);
            p.children.splice(refIndex, 0, this);
            if (node.previousSibling) {
                node.previousSibling.nextSibling = this;
            }
            this.previousSibling = node.previousSibling;
            this.nextSibling = node;
            node.previousSibling = this;

            this.applyParent(p);
        }

        return this;
    },
 
    insertAfter: function(node) {
        var p = node.parent;
        if (p) {

            if (this.tree) {
                this.tree.popNode(this);
            }

            var refIndex = node.isChildOf(p);

            if (!node.nextSibling) {
                return this.appendTo(p);
            }

            p.children.splice(refIndex + 1, 0, this);

            node.nextSibling.previousSibling = this;
            this.previousSibling = node;
            this.nextSibling = node.nextSibling;
            node.nextSibling = this;

            this.applyParent(p);
        }

        return this;
    },

    isChildOf: function(parentNode) {
        if (parentNode && parentNode.children) {
            for (var i=0, len=parentNode.children.length; i<len ; ++i) {
                if (parentNode.children[i] === this) {
                    return i;
                }
            }
        }

        return -1;
    },

    getSiblings: function() {
        return this.parent.children;
    },

    showChildren: function() {
        if (!this.tree.animateExpand(this.getChildrenEl(), this)) {
            if (this.hasChildren()) {
                this.getChildrenEl().style.display = "";
            }
        }
    },

    hideChildren: function() {

        if (!this.tree.animateCollapse(this.getChildrenEl(), this)) {
            this.getChildrenEl().style.display = "none";
        }
    },

    getElId: function() {
        return "ygtv" + this.index;
    },

    getChildrenElId: function() {
        return "ygtvc" + this.index;
    },

    getToggleElId: function() {
        return "ygtvt" + this.index;
    },

    /*
    getSpacerId: function() {
        return "ygtvspacer" + this.index;
    }, 
    */

    getEl: function() {
        return document.getElementById(this.getElId());
    },

    getChildrenEl: function() {
        return document.getElementById(this.getChildrenElId());
    },

    getToggleEl: function() {
        return document.getElementById(this.getToggleElId());
    },

    /*
    getSpacer: function() {
        return document.getElementById( this.getSpacerId() ) || {};
    },
    */

    /*
    getStateText: function() {
        if (this.isLoading) {
            return this.loadingText;
        } else if (this.hasChildren(true)) {
            if (this.expanded) {
                return this.expandedText;
            } else {
                return this.collapsedText;
            }
        } else {
            return "";
        }
    },
    */

    getToggleLink: function() {
        return "YAHOO.widget.TreeView.getNode(\'" + this.tree.id + "\'," + 
            this.index + ").toggle()";
    },

    collapse: function() {
        // Only collapse if currently expanded
        if (!this.expanded) { return; }

        // fire the collapse event handler
        var ret = this.tree.onCollapse(this);

        if (false === ret) {
            return;
        }

        ret = this.tree.fireEvent("collapse", this);

        if (false === ret) {
            return;
        }

        if (!this.getEl()) {
            this.expanded = false;
            return;
        }

        // hide the child div
        this.hideChildren();
        this.expanded = false;

        this.updateIcon();

        // this.getSpacer().title = this.getStateText();

    },

    expand: function() {
        if (this.expanded) { return; }

        var ret = this.tree.onExpand(this);

        if (false === ret) {
            return;
        }
        
        ret = this.tree.fireEvent("expand", this);

        if (false === ret) {
            return;
        }

        if (!this.getEl()) {
            this.expanded = true;
            return;
        }

        if (! this.childrenRendered) {
            this.getChildrenEl().innerHTML = this.renderChildren();
        } else {
        }

        this.expanded = true;

        this.updateIcon();

        // this.getSpacer().title = this.getStateText();

        // if (!this.hasChildren()) {
        if (this.isLoading) {
            this.expanded = false;
            return;
        }

        if (! this.multiExpand) {
            var sibs = this.getSiblings();
            for (var i=0; i<sibs.length; ++i) {
                if (sibs[i] != this && sibs[i].expanded) { 
                    sibs[i].collapse(); 
                }
            }
        }

        this.showChildren();
    },

    updateIcon: function() {
        if (this.hasIcon) {
            var el = this.getToggleEl();
            if (el) {
                el.className = this.getStyle();
            }
        }
    },

    getStyle: function() {
        if (this.isLoading) {
            return "ygtvloading";
        } else {
            var loc = (this.nextSibling) ? "t" : "l";

            // type p=plus(expand), m=minus(collapase), n=none(no children)
            var type = "n";
            if (this.hasChildren(true) || (this.isDynamic() && !this.getIconMode())) {
            // if (this.hasChildren(true)) {
                type = (this.expanded) ? "m" : "p";
            }

            return "ygtv" + loc + type;
        }
    },

    getHoverStyle: function() { 
        var s = this.getStyle();
        if (this.hasChildren(true) && !this.isLoading) { 
            s += "h"; 
        }
        return s;
    },

    expandAll: function() { 
        for (var i=0;i<this.children.length;++i) {
            var c = this.children[i];
            if (c.isDynamic()) {
                alert("Not supported (lazy load + expand all)");
                break;
            } else if (! c.multiExpand) {
                alert("Not supported (no multi-expand + expand all)");
                break;
            } else {
                c.expand();
                c.expandAll();
            }
        }
    },

    collapseAll: function() { 
        for (var i=0;i<this.children.length;++i) {
            this.children[i].collapse();
            this.children[i].collapseAll();
        }
    },

    setDynamicLoad: function(fnDataLoader, iconMode) { 
        if (fnDataLoader) {
            this.dataLoader = fnDataLoader;
            this._dynLoad = true;
        } else {
            this.dataLoader = null;
            this._dynLoad = false;
        }

        if (iconMode) {
            this.iconMode = iconMode;
        }
    },

    isRoot: function() { 
        return (this == this.tree.root);
    },

    isDynamic: function() { 
        var lazy = (!this.isRoot() && (this._dynLoad || this.tree.root._dynLoad));
        return lazy;
    },

    getIconMode: function() {
        return (this.iconMode || this.tree.root.iconMode);
    },

    hasChildren: function(checkForLazyLoad) { 
        return ( this.children.length > 0 || 
                (checkForLazyLoad && this.isDynamic() && !this.dynamicLoadComplete) );
    },

    toggle: function() {
        if (!this.tree.locked && ( this.hasChildren(true) || this.isDynamic()) ) {
            if (this.expanded) { this.collapse(); } else { this.expand(); }
        }
    },

    getHtml: function() {

        this.childrenRendered = false;

        var sb = [];
        sb[sb.length] = '<div class="ygtvitem" id="' + this.getElId() + '">';
        sb[sb.length] = this.getNodeHtml();
        sb[sb.length] = this.getChildrenHtml();
        sb[sb.length] = '</div>';
        return sb.join("");
    },

    getChildrenHtml: function() {

        var sb = [];
        sb[sb.length] = '<div class="ygtvchildren"';
        sb[sb.length] = ' id="' + this.getChildrenElId() + '"';
        if (!this.expanded) {
            sb[sb.length] = ' style="display:none;"';
        }
        sb[sb.length] = '>';

        if ( (this.hasChildren(true) && this.expanded) ||
                (this.renderHidden && !this.isDynamic()) ) {
            sb[sb.length] = this.renderChildren();
        }

        sb[sb.length] = '</div>';

        return sb.join("");
    },

    renderChildren: function() {

        var node = this;

        if (this.isDynamic() && !this.dynamicLoadComplete) {
            this.isLoading = true;
            this.tree.locked = true;

            if (this.dataLoader) {

                setTimeout( 
                    function() {
                        node.dataLoader(node, 
                            function() { 
                                node.loadComplete(); 
                            });
                    }, 10);
                
            } else if (this.tree.root.dataLoader) {

                setTimeout( 
                    function() {
                        node.tree.root.dataLoader(node, 
                            function() { 
                                node.loadComplete(); 
                            });
                    }, 10);

            } else {
                return "Error: data loader not found or not specified.";
            }

            return "";

        } else {
            return this.completeRender();
        }
    },

    completeRender: function() {
        var sb = [];

        for (var i=0; i < this.children.length; ++i) {
            // this.children[i].childrenRendered = false;
            sb[sb.length] = this.children[i].getHtml();
        }
        
        this.childrenRendered = true;

        return sb.join("");
    },

    loadComplete: function() {
        this.getChildrenEl().innerHTML = this.completeRender();
        this.dynamicLoadComplete = true;
        this.isLoading = false;
        this.expand();
        this.tree.locked = false;
    },

    getAncestor: function(depth) {
        if (depth >= this.depth || depth < 0)  {
            return null;
        }

        var p = this.parent;
        
        while (p.depth > depth) {
            p = p.parent;
        }

        return p;
    },

    getDepthStyle: function(depth) {
        return (this.getAncestor(depth).nextSibling) ? 
            "ygtvdepthcell" : "ygtvblankdepthcell";
    },

    getNodeHtml: function() { 
        return ""; 
    },

    refresh: function() {
        // this.loadComplete();
        this.getChildrenEl().innerHTML = this.completeRender();

        if (this.hasIcon) {
            var el = this.getToggleEl();
            if (el) {
                el.className = this.getStyle();
            }
        }
    },

    toString: function() {
        return "Node (" + this.index + ")";
    }

};

YAHOO.augment(YAHOO.widget.Node, YAHOO.util.EventProvider);
YAHOO.widget.RootNode = function(oTree) {
	this.init(null, null, true);
	this.tree = oTree;
};

YAHOO.extend(YAHOO.widget.RootNode, YAHOO.widget.Node, {
    
    getNodeHtml: function() { 
        return ""; 
    },

    toString: function() { 
        return "RootNode";
    },

    loadComplete: function() { 
        this.tree.draw();
    }

});

YAHOO.widget.TextNode = function(oData, oParent, expanded) {

    if (oData) { 
        this.init(oData, oParent, expanded);
        this.setUpLabel(oData);
    }

};

YAHOO.extend(YAHOO.widget.TextNode, YAHOO.widget.Node, {
    
    labelStyle: "ygtvlabel",
    labelElId: null,
    label: null,

    textNodeParentChange: function() {
 
        if (this.tree && !this.tree.hasEvent("labelClick")) {
            this.tree.createEvent("labelClick", this.tree);
        }
       
    },

    setUpLabel: function(oData) { 
        
        this.textNodeParentChange();
        this.subscribe("parentChange", this.textNodeParentChange);

        if (typeof oData == "string") {
            oData = { label: oData };
        }
        this.label = oData.label;
        
        if (oData.href) {
            this.href = oData.href;
        }

        if (oData.target) {
            this.target = oData.target;
        }

        if (oData.style) {
            this.labelStyle = oData.style;
        }

        this.labelElId = "ygtvlabelel" + this.index;
    },

    getLabelEl: function() { 
        return document.getElementById(this.labelElId);
    },

    getNodeHtml: function() { 
        var sb = [];

        sb[sb.length] = '<table border="0" cellpadding="0" cellspacing="0">';
        sb[sb.length] = '<tr>';
        
        for (var i=0;i<this.depth;++i) {
            // sb[sb.length] = '<td class="ygtvdepthcell">&#160;</td>';
            sb[sb.length] = '<td class="' + this.getDepthStyle(i) + '">&#160;</td>';
        }

        var getNode = 'YAHOO.widget.TreeView.getNode(\'' +
                        this.tree.id + '\',' + this.index + ')';

        sb[sb.length] = '<td';
        // sb[sb.length] = ' onselectstart="return false"';
        sb[sb.length] = ' id="' + this.getToggleElId() + '"';
        sb[sb.length] = ' class="' + this.getStyle() + '"';
        if (this.hasChildren(true)) {
            sb[sb.length] = ' onmouseover="this.className=';
            sb[sb.length] = getNode + '.getHoverStyle()"';
            sb[sb.length] = ' onmouseout="this.className=';
            sb[sb.length] = getNode + '.getStyle()"';
        }
        sb[sb.length] = ' onclick="javascript:' + this.getToggleLink() + '">';

        /*
        sb[sb.length] = '<img id="' + this.getSpacerId() + '"';
        sb[sb.length] = ' alt=""';
        sb[sb.length] = ' tabindex=0';
        sb[sb.length] = ' src="' + this.spacerPath + '"';
        sb[sb.length] = ' title="' + this.getStateText() + '"';
        sb[sb.length] = ' class="ygtvspacer"';
        // sb[sb.length] = ' onkeypress="return ' + getNode + '".onKeyPress()"';
        sb[sb.length] = ' />';
        */

        sb[sb.length] = '&#160;';

        sb[sb.length] = '</td>';
        sb[sb.length] = '<td>';
        sb[sb.length] = '<a';
        sb[sb.length] = ' id="' + this.labelElId + '"';
        sb[sb.length] = ' class="' + this.labelStyle + '"';
        sb[sb.length] = ' href="' + this.href + '"';
        sb[sb.length] = ' target="' + this.target + '"';
        sb[sb.length] = ' onclick="return ' + getNode + '.onLabelClick(' + getNode +')"';
        if (this.hasChildren(true)) {
            sb[sb.length] = ' onmouseover="document.getElementById(\'';
            sb[sb.length] = this.getToggleElId() + '\').className=';
            sb[sb.length] = getNode + '.getHoverStyle()"';
            sb[sb.length] = ' onmouseout="document.getElementById(\'';
            sb[sb.length] = this.getToggleElId() + '\').className=';
            sb[sb.length] = getNode + '.getStyle()"';
        }
        sb[sb.length] = ' >';
        sb[sb.length] = this.label;
        sb[sb.length] = '</a>';
        sb[sb.length] = '</td>';
        sb[sb.length] = '</tr>';
        sb[sb.length] = '</table>';

        return sb.join("");
    },

    onLabelClick: function(me) { 
        return me.tree.fireEvent("labelClick", me);
        //return true;
    },

    toString: function() { 
        return "TextNode (" + this.index + ") " + this.label;
    }

});

YAHOO.widget.MenuNode = function(oData, oParent, expanded) {
	if (oData) { 
		this.init(oData, oParent, expanded);
		this.setUpLabel(oData);
	}

	this.multiExpand = false;

};

YAHOO.extend(YAHOO.widget.MenuNode, YAHOO.widget.TextNode, {

    toString: function() { 
        return "MenuNode (" + this.index + ") " + this.label;
    }

});

YAHOO.widget.HTMLNode = function(oData, oParent, expanded, hasIcon) {
    if (oData) { 
        this.init(oData, oParent, expanded);
        this.initContent(oData, hasIcon);
    }
};

YAHOO.extend(YAHOO.widget.HTMLNode, YAHOO.widget.Node, {

    contentStyle: "ygtvhtml",
    contentElId: null,
    content: null,
    initContent: function(oData, hasIcon) { 
        if (typeof oData == "string") {
            oData = { html: oData };
        }

        this.html = oData.html;
        this.contentElId = "ygtvcontentel" + this.index;
        this.hasIcon = hasIcon;

    },

    getContentEl: function() { 
        return document.getElementById(this.contentElId);
    },

    getNodeHtml: function() { 
        var sb = [];

        sb[sb.length] = '<table border="0" cellpadding="0" cellspacing="0">';
        sb[sb.length] = '<tr>';
        
        for (var i=0;i<this.depth;++i) {
            sb[sb.length] = '<td class="' + this.getDepthStyle(i) + '">&#160;</td>';
        }

        if (this.hasIcon) {
            sb[sb.length] = '<td';
            sb[sb.length] = ' id="' + this.getToggleElId() + '"';
            sb[sb.length] = ' class="' + this.getStyle() + '"';
            sb[sb.length] = ' onclick="javascript:' + this.getToggleLink() + '"';
            if (this.hasChildren(true)) {
                sb[sb.length] = ' onmouseover="this.className=';
                sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\'';
                sb[sb.length] = this.tree.id + '\',' + this.index +  ').getHoverStyle()"';
                sb[sb.length] = ' onmouseout="this.className=';
                sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\'';
                sb[sb.length] = this.tree.id + '\',' + this.index +  ').getStyle()"';
            }
            sb[sb.length] = '>&#160;</td>';
        }

        sb[sb.length] = '<td';
        sb[sb.length] = ' id="' + this.contentElId + '"';
        sb[sb.length] = ' class="' + this.contentStyle + '"';
        sb[sb.length] = ' >';
        sb[sb.length] = this.html;
        sb[sb.length] = '</td>';
        sb[sb.length] = '</tr>';
        sb[sb.length] = '</table>';

        return sb.join("");
    },

    toString: function() { 
        return "HTMLNode (" + this.index + ")";
    }

});

YAHOO.widget.TVAnim = function() {
    return {
        FADE_IN: "TVFadeIn",
        FADE_OUT: "TVFadeOut",

        getAnim: function(type, el, callback) {
            if (YAHOO.widget[type]) {
                return new YAHOO.widget[type](el, callback);
            } else {
                return null;
            }
        },

        isValid: function(type) {
            return (YAHOO.widget[type]);
        }
    };
} ();

YAHOO.widget.TVFadeIn = function(el, callback) {
    this.el = el;
    this.callback = callback;

};

YAHOO.widget.TVFadeIn.prototype = {
    animate: function() {
        var tvanim = this;

        var s = this.el.style;
        s.opacity = 0.1;
        s.filter = "alpha(opacity=10)";
        s.display = "";

        var dur = 0.4; 
        var a = new YAHOO.util.Anim(this.el, {opacity: {from: 0.1, to: 1, unit:""}}, dur);
        a.onComplete.subscribe( function() { tvanim.onComplete(); } );
        a.animate();
    },

    onComplete: function() {
        this.callback();
    },

    toString: function() {
        return "TVFadeIn";
    }
};

YAHOO.widget.TVFadeOut = function(el, callback) {
    this.el = el;
    this.callback = callback;

};

YAHOO.widget.TVFadeOut.prototype = {
    animate: function() {
        var tvanim = this;
        var dur = 0.4;
        var a = new YAHOO.util.Anim(this.el, {opacity: {from: 1, to: 0.1, unit:""}}, dur);
        a.onComplete.subscribe( function() { tvanim.onComplete(); } );
        a.animate();
    },

    onComplete: function() {
        var s = this.el.style;
        s.display = "none";
        // s.opacity = 1;
        s.filter = "alpha(opacity=100)";
        this.callback();
    },

    toString: function() {
        return "TVFadeOut";
    }
};

/******************************************************************************/

function jktreeview(treeid){
	this.treetop=new YAHOO.widget.TreeView(treeid)
}

jktreeview.prototype.addItem = function(itemText, noderef, href, target){
  var noderef = (typeof noderef != "undefined" && noderef != "") ? noderef : this.treetop.getRoot()
  var treebranch = new YAHOO.widget.TextNode(itemText, noderef, false)
  if (typeof href != "undefined")
    treebranch.href = href
  if (typeof target != "undefined")
    treebranch.target = target
  return treebranch
}