/*

 * DO NOT REMOVE THIS NOTICE

 *

 * PROJECT:   mygosuMenu

 * VERSION:   1.1.6

 * COPYRIGHT: (c) 2003,2004 Cezary Tomczak

 * LINK:      http://gosu.pl/dhtml/mygosumenu.html

 * LICENSE:   BSD (revised)

 */



/*

  Todo, bugs to fix:

  - delay.show = 400 , delay.hide = 400

    go Product Three -> Live Demo -> Test Drive -> Test Three , go fast to Product Four.

    Result: 2 elements highlighted in the same section

  - delay.show = 0 , delay.hide = 400

    go Product Three -> Live Demo , section out , section over, seciont out.

    Result: Live Demo is not highlighted

  - active className changing, unnecessary blink

  - opera: hideSection() exceptions are throwed

*/



function DropDownMenuX(id) {



    /* Type of the menu: "horizontal" or "vertical" */

    this.type = "horizontal";



    /* Delay (in miliseconds >= 0): show-hide menu

     * Hide must be > 0 */

    this.delay = {

        "show": 0,

        "hide": 400

    }

    /* Change the default position of sub-menu by Y pixels from top and X pixels from left

     * Negative values are allowed */

    this.position = {

        "level1": { "top": 2, "left": 0},

        "levelX": { "top": 0, "left": 0}

    }



    /* fix ie selectbox bug ? */

    this.fixIeSelectBoxBug = true;



    /* Z-index property for .section */

    this.zIndex = {

        "visible": 500,

        "hidden": -1

    };



    // Browser detection

    this.browser = {

        "ie": Boolean(document.body.currentStyle),

        "ie5": (navigator.appVersion.indexOf("MSIE 5.5") != -1 || navigator.appVersion.indexOf("MSIE 5.0") != -1),

        "ie6": (navigator.appVersion.indexOf("MSIE 6.0") != -1)

    };

    

    if (!this.browser.ie) {

        this.browser.ie5 = false;

        this.browser.ie6 = false;

    }



    /* Initialize the menu */

    this.init = function() {

        if (!document.getElementById(this.id)) { return alert("DropDownMenuX.init() failed. Element '"+ this.id +"' does not exist."); }

        if (this.type != "horizontal" && this.type != "vertical") { return alert("DropDownMenuX.init() failed. Unknown menu type: '"+this.type+"'"); }

        if (this.browser.ie && this.browser.ie5) { fixWrap(); }

        fixSections();

        parse(document.getElementById(this.id).childNodes, this.tree, this.id);

    }



    /* Search for .section elements and set width for them */

    function fixSections() {

        var arr = document.getElementById(self.id).getElementsByTagName("div");

        var sections = new Array();

        var widths = new Array();

        

        for (var i = 0; i < arr.length; i++) {

            if (arr[i].className == "section") {

                sections.push(arr[i]);

            }

        }

        for (var i = 0; i < sections.length; i++) {

            widths.push(getMaxWidth(sections[i].childNodes));

        }

        for (var i = 0; i < sections.length; i++) {

            sections[i].style.width = (widths[i]) + "px";

        }

        if (self.browser.ie) {

            for (var i = 0; i < sections.length; i++) {

                setMaxWidth(sections[i].childNodes, widths[i]);

            }

        }

    }



    function fixWrap() {

        var elements = document.getElementById(self.id).getElementsByTagName("a");

        for (var i = 0; i < elements.length; i++) {

            if (/item2/.test(elements[i].className)) {

                elements[i].innerHTML = '<div nowrap="nowrap">'+elements[i].innerHTML+'</div>';

            }

        }

    }



    /* Search for an element with highest width among given nodes, return that width */

    function getMaxWidth(nodes) {

        var maxWidth = 0;

        for (var i = 0; i < nodes.length; i++) {

            if (nodes[i].nodeType != 1 || /section/.test(nodes[i].className)) { continue; }

            if (nodes[i].offsetWidth > maxWidth) { maxWidth = nodes[i].offsetWidth; }

        }

        return maxWidth;

    }



    /* Set width for item2 elements */

    function setMaxWidth(nodes, maxWidth) {

        for (var i = 0; i < nodes.length; i++) {

            if (nodes[i].nodeType == 1 && /item2/.test(nodes[i].className) && nodes[i].currentStyle) {

                if (self.browser.ie5) {

                    nodes[i].style.width = (maxWidth) + "px";

                } else {

                    nodes[i].style.width = (maxWidth - parseInt(nodes[i].currentStyle.paddingLeft) - parseInt(nodes[i].currentStyle.paddingRight)) + "px";

                }

            }

        }

    }



    /* Parse nodes, create events, position elements */

    function parse(nodes, tree, id) {

        for (var i = 0; i < nodes.length; i++) {

            if (1 != nodes[i].nodeType) {

                continue;

            }

            switch (true) {

                // .item1

                case /\bitem1\b/.test(nodes[i].className):

                    nodes[i].id = id + "-" + tree.length;

                    tree.push(new Array());

                    nodes[i].onmouseover = itemOver;

                    nodes[i].onmouseout = itemOut;

                    break;

                // .item2

                case /\bitem2\b/.test(nodes[i].className):

                    nodes[i].id = id + "-" + tree.length;

                    tree.push(new Array());

                    nodes[i].onmouseover = itemOver;

                    nodes[i].onmouseout = itemOut;

                    break;

                // .section

                case /\bsection\b/.test(nodes[i].className):

                    // id, events

                    nodes[i].id = id + "-" + (tree.length - 1) + "-section";

                    nodes[i].onmouseover = sectionOver;

                    nodes[i].onmouseout = sectionOut;

                    // position

                    var box1 = document.getElementById(id + "-" + (tree.length - 1));

                    var box2 = document.getElementById(nodes[i].id);

                    var el = new Element(box1.id);

                    if (1 == el.level) {

                        if ("horizontal" == self.type) {

                            box2.style.top = box1.offsetTop + box1.offsetHeight + self.position.level1.top + "px";

                            if (self.browser.ie5) {

                                box2.style.left = self.position.level1.left + "px";

                            } else {

                                box2.style.left = box1.offsetLeft + self.position.level1.left + "px";

                            }

                        } else if ("vertical" == self.type) {

                            box2.style.top = box1.offsetTop + self.position.level1.top + "px";

                            if (self.browser.ie5) {

                                box2.style.left = box1.offsetWidth + self.position.level1.left + "px";

                            } else {

                                box2.style.left = box1.offsetLeft + box1.offsetWidth + self.position.level1.left + "px";

                            }

                        }

                    } else {

                        box2.style.top = box1.offsetTop + self.position.levelX.top + "px";

                        box2.style.left = box1.offsetLeft + box1.offsetWidth + self.position.levelX.left + "px";

                    }

                    // sections, sectionsShowCnt, sectionsHideCnt

                    self.sections.push(nodes[i].id);

                    self.sectionsShowCnt.push(0);

                    self.sectionsHideCnt.push(0);

                    if (self.fixIeSelectBoxBug && self.browser.ie6) {

                        nodes[i].innerHTML = nodes[i].innerHTML + '<iframe id="'+nodes[i].id+'-iframe" src="javascript:false;" scrolling="no" frameborder="0" style="position: absolute; top: 0px; left: 0px; display: none; filter:alpha(opacity=0);"></iframe>';

                    }

                    break;

            }

            if (nodes[i].childNodes) {

                if (/\bsection\b/.test(nodes[i].className)) {

                    parse(nodes[i].childNodes, tree[tree.length - 1], id + "-" + (tree.length - 1));

                } else {

                    parse(nodes[i].childNodes, tree, id);

                }

            }

        }

    }



    /* event, item:onmouseover */

    function itemOver() {

        //debug("itemOver("+this.id+") , visible = " + self.visible);

        self.itemShowCnt++;

        var id_section = this.id + "-section";

        if (self.visible.length) {

            var el = new Element(self.visible.getLast());

            el = document.getElementById(el.getParent().id);

            if (/item\d-active/.test(el.className)) {

                el.className = el.className.replace(/(item\d)-active/, "$1");

            }

        }

        if (self.sections.contains(id_section)) {

            clearTimers();

            self.sectionsHideCnt[self.sections.indexOf(id_section)]++;

            var cnt = self.sectionsShowCnt[self.sections.indexOf(id_section)];

            var timerId = setTimeout(function(a, b) { return function() { self.showSection(a, b); } } (id_section, cnt), self.delay.show);

            self.timers.push(timerId);

        } else {

            if (self.visible.length) {

                clearTimers();

                var timerId = setTimeout(function(a, b) { return function() { self.showItem(a, b); } } (this.id, self.itemShowCnt), self.delay.show);

                self.timers.push(timerId);

            }

        }

    }



    /* event, item:onmouseout */

    function itemOut() {

        //debug("itemOut("+this.id+") , visible = " + self.visible);

        self.itemShowCnt++;

        var id_section = this.id + "-section";

        if (self.sections.contains(id_section)) {

            self.sectionsShowCnt[self.sections.indexOf(id_section)]++;

            if (self.visible.contains(id_section)) {

                var cnt = self.sectionsHideCnt[self.sections.indexOf(id_section)];

                var timerId = setTimeout(function(a, b) { return function() { self.hideSection(a, b); } }(id_section, cnt), self.delay.hide);

                self.timers.push(timerId);

            }

        }

    }



    /* event, section:onmouseover */

    function sectionOver() {

        //debug("sectionOver("+this.id+") , visible = " + self.visible);

        self.sectionsHideCnt[self.sections.indexOf(this.id)]++;

        var el = new Element(this.id);

        var parent = document.getElementById(el.getParent().id);

        if (!/item\d-active/.test(parent.className)) {

            parent.className = parent.className.replace(/(item\d)/, "$1-active");

        }

    }



    /* event, section:onmouseout */

    function sectionOut() {

        //debug("sectionOut("+this.id+") , visible = " + self.visible);

        self.sectionsShowCnt[self.sections.indexOf(this.id)]++;

        var cnt = self.sectionsHideCnt[self.sections.indexOf(this.id)];

        var timerId = setTimeout(function(a, b) { return function() { self.hideSection(a, b); } }(this.id, cnt), self.delay.hide);

        self.timers.push(timerId);

    }



    /* Show section (1 argument passed)

     * Try to show section (2 arguments passed) - check cnt with sectionShowCnt */

    this.showSection = function(id, cnt) {

        if (typeof cnt != "undefined") {

            if (cnt != this.sectionsShowCnt[this.sections.indexOf(id)]) { return; }

        }

        //debug("showSection("+id+", "+cnt+") , visible = " + this.visible);

        this.sectionsShowCnt[this.sections.indexOf(id)]++;

        if (this.visible.length) {

            if (id == this.visible.getLast()) { return; }

            var el = new Element(id);

            var parents = el.getParentSections();

            //debug("getParentSections("+el.id+") = " + parents);

            for (var i = this.visible.length - 1; i >= 0; i--) {

                if (parents.contains(this.visible[i])) {

                    break;

                } else {

                    this.hideSection(this.visible[i]);

                }

            }

        }

        var el = new Element(id);

        var parent = document.getElementById(el.getParent().id);

        if (!/item\d-active/.test(parent.className)) {

            parent.className = parent.className.replace(/(item\d)/, "$1-active");

        }

        if (document.all) { document.getElementById(id).style.display = "block"; }

        document.getElementById(id).style.visibility = "visible";

        document.getElementById(id).style.zIndex = this.zIndex.visible;

        if (this.fixIeSelectBoxBug && this.browser.ie6) {

            var div = document.getElementById(id);

            var iframe = document.getElementById(id+"-iframe");

            iframe.style.width = div.offsetWidth + parseInt(div.currentStyle.borderLeftWidth) + parseInt(div.currentStyle.borderRightWidth);

            iframe.style.height = div.offsetHeight + parseInt(div.currentStyle.borderTopWidth) + parseInt(div.currentStyle.borderBottomWidth);

            iframe.style.top = -parseInt(div.currentStyle.borderTopWidth);

            iframe.style.left = -parseInt(div.currentStyle.borderLeftWidth);

            iframe.style.zIndex = div.style.zIndex - 1;

            iframe.style.display = "block";

        }

        this.visible.push(id);

    }



    /* Emulating an empty non-existent section, we have to hide elements, works like showSection() */

    this.showItem = function(id, cnt) {

        if (typeof cnt != "undefined") {

            if (cnt != this.itemShowCnt) { return; }

        }

        this.itemShowCnt++;

        if (this.visible.length) {

            var el = new Element(id + "-section");

            var parents = el.getParentSections();

            //debug("showItem() getParentSections("+el.id+") = " + parents);

            for (var i = this.visible.length - 1; i >= 0; i--) {

                if (parents.contains(this.visible[i])) {

                    break;

                } else {

                    this.hideSection(this.visible[i]);

                }

            }

        }

    }



    /* Hide section (1 argument passed)

     * Try to hide section (2 arguments passed) - check cnt with sectionHideCnt */

    this.hideSection = function(id, cnt) {

        if (typeof cnt != "undefined") {

            if (cnt != this.sectionsHideCnt[this.sections.indexOf(id)]) { return; }

            if (id == this.visible.getLast()) {

                //debug("hideSectionAll("+id+", "+cnt+") , visible = " + this.visible);

                for (var i = this.visible.length - 1; i >= 0; i--) {

                    this.hideSection(this.visible[i]);

                }

                return;

            }

        }

        //debug("hideSection("+id+", "+cnt+") , visible = " + this.visible);

        var el = new Element(id);

        var parent = document.getElementById(el.getParent().id);

        if (/item\d-active/.test(parent.className)) {

            parent.className = parent.className.replace(/(item\d)-active/, "$1");

        }

        document.getElementById(id).style.zIndex = this.zIndex.hidden;

        document.getElementById(id).style.visibility = "hidden";

        if (document.all) { document.getElementById(id).style.display = "none"; }

        if (this.fixIeSelectBoxBug && this.browser.ie6) {

            var iframe = document.getElementById(id+"-iframe");

            iframe.style.display = "none";

        }

        if (this.visible.contains(id)) {

            if (id == this.visible.getLast()) {

                this.visible.pop();

            } else {

                //throw "DropDownMenuX.hideSection('"+id+"', "+cnt+") failed, trying to hide a section that is not the deepest visible section";

                return;

            }

        } else {

            //throw "DropDownMenuX.hideSection('"+id+"', "+cnt+") failed, cannot hide element that is not visible";

            return;

        }

        this.sectionsHideCnt[this.sections.indexOf(id)]++;

    }



    /* Element (.section, .item2 etc) */

    function Element(id) {

        

        this.menu = self;

        this.id = id;



        /* Get Level of given id

         * Examples: menu-1 (1 level), menu-1-4 (2 level) */

        this.getLevel = function() {

            var s = this.id.substr(this.menu.id.length);

            return s.substrCount("-");

        }



        /* Get parent Element */

        this.getParent = function() {

            var s = this.id.substr(this.menu.id.length);

            var a = s.split("-");

            a.pop();

            return new Element(this.menu.id + a.join("-"));

        }



        /* Check whether an element has a parent element */

        this.hasParent = function() {

            var s = this.id.substr(this.menu.id.length);

            var a = s.split("-");

            return a.length > 2;

        }



        /* Check whether an element has a sub-section */

        this.hasChilds = function() {

            return Boolean(document.getElementById(this.id + "-section"));

        }



        /* Get parent section elements for current section */

        this.getParentSections = function() {

            var s = this.id.substr(this.menu.id.length);

            s = s.substr(0, s.length - "-section".length);

            var a = s.split("-");

            a.shift();

            a.pop();

            var s = this.menu.id;

            var parents = [];

            for (var i = 0; i < a.length; i++) {

                s += ("-" + a[i]);

                parents.push(s + "-section");

            }

            return parents;

        }

        

        this.level = this.getLevel();

    }



    /* Clear all timers set with setTimeout() */

    function clearTimers() {

        for (var i = self.timers.length - 1; i >= 0; i--) {

            clearTimeout(self.timers[i]);

            self.timers.pop();

        }

    }



    var self = this;

    this.id = id; /* menu id */

    this.tree = []; /* tree structure of menu */

    this.sections = []; /* all sections, required for timeout */

    this.sectionsShowCnt = [];

    this.sectionsHideCnt = [];

    this.itemShowCnt = 0;

    this.timers = []; // timeout ids

    this.visible = []; /* visible section, ex. Array("menu-0-section", ..) , succession is important: top to bottom */

}



/* Finds the index of the first occurence of item in the array, or -1 if not found */

if (typeof Array.prototype.indexOf == "undefined") {

    Array.prototype.indexOf = function(item) {

        for (var i = 0; i < this.length; i++) {

            if (this[i] === item) {

                return i;

            }

        }

        return -1;

    }

}



/* Check whether array contains given string */

if (typeof Array.prototype.contains == "undefined") {

    Array.prototype.contains = function(s) {

        for (var i = 0; i < this.length; i++) {

            if (this[i] === s) {

                return true;

            }

        }

        return false;

    }

}



/* Counts the number of substring occurrences */

if (typeof String.prototype.substrCount == "undefined") {

    String.prototype.substrCount = function(s) {

        return this.split(s).length - 1;

    }

}



/* Get the last element from the array */

if (typeof Array.prototype.getLast == "undefined") {

    Array.prototype.getLast = function() {

        return this[this.length-1];

    }

}