/* Copyright (c) 2006 Patrick Fitzgerald */

function tabberObj(argsObj)
{
    var arg;
    this.div                    = null;
    this.classMain              = "tabber";
    this.classMainLive          = "tabberlive";
    this.classTab               = "tabbertab";
    this.classTabDefault        = "tabbertabdefault";
    this.classNav               = "tabbernav";
    this.classTabHide           = "tabbertabhide";
    this.classNavActive         = "tabberactive";
    this.titleElements          = [ 'h2', 'h3', 'h4', 'h5', 'h6' ];
    this.titleElementsStripHTML = true;
    this.removeTitle            = true;
    this.addLinkId              = false;
    this.linkIdFormat           = '<tabberid>nav<tabnumberone>';
    for (arg in argsObj) {
        this[arg] = argsObj[arg];
    }
    this.REclassMain       = new RegExp('\\b' + this.classMain + '\\b', 'gi');
    this.REclassMainLive   = new RegExp('\\b' + this.classMainLive + '\\b', 'gi');
    this.REclassTab        = new RegExp('\\b' + this.classTab + '\\b', 'gi');
    this.REclassTabDefault = new RegExp('\\b' + this.classTabDefault + '\\b', 'gi');
    this.REclassTabHide    = new RegExp('\\b' + this.classTabHide + '\\b', 'gi');
    this.tabs              = new Array();
    if (this.div) {
        this.init(this.div);
        this.div = null;
    }
}
tabberObj.prototype.init = function(e) {
    var childNodes, i, i2, t, defaultTab = 0, DOM_ul, DOM_li, DOM_a, aId, headingElement;
    if (!document.getElementsByTagName) {
        return false;
    }
    if (e.id) {
        this.id = e.id;
    }
    this.tabs.length = 0;
    childNodes       = e.childNodes;
    for (i = 0; i < childNodes.length; i++) {
        if (childNodes[i].className && childNodes[i].className.match(this.REclassTab)) {
            t                           = new Object();
            t.div                       = childNodes[i];
            this.tabs[this.tabs.length] = t;
            if (childNodes[i].className.match(this.REclassTabDefault)) {
                defaultTab = this.tabs.length - 1;
            }
        }
    }
    DOM_ul           = document.createElement("ul");
    DOM_ul.className = this.classNav;
    for (i = 0; i < this.tabs.length; i++) {
        t             = this.tabs[i];
        t.headingText = t.div.title;
        if (this.removeTitle) {
            t.div.title = '';
        }
        if (!t.headingText) {
            for (i2 = 0; i2 < this.titleElements.length; i2++) {
                headingElement = t.div.getElementsByTagName(this.titleElements[i2])[0];
                if (headingElement) {
                    t.headingText = headingElement.innerHTML;
                    if (this.titleElementsStripHTML) {
                        t.headingText.replace(/<br>/gi, " ");
                        t.headingText = t.headingText.replace(/<[^>]+>/g, "");
                    }
                    break;
                }
            }
        }
        if (!t.headingText) {
            t.headingText = i + 1;
        }
        DOM_li = document.createElement("li");
        t.li   = DOM_li;
        DOM_a  = document.createElement("a");
        DOM_a.appendChild(document.createTextNode(t.headingText));
        DOM_a.href        = "javascript:void(null);";
        DOM_a.title       = t.headingText;
        DOM_a.onclick     = this.navClick;
        DOM_a.tabber      = this;
        DOM_a.tabberIndex = i;
        if (this.addLinkId && this.linkIdFormat) {
            aId      = this.linkIdFormat;
            aId      = aId.replace(/<tabberid>/gi, this.id);
            aId      = aId.replace(/<tabnumberzero>/gi, i);
            aId      = aId.replace(/<tabnumberone>/gi, i + 1);
            aId      = aId.replace(/<tabtitle>/gi,
                              t.headingText.replace(/[^a-zA-Z0-9\-]/gi, ''));
            DOM_a.id = aId;
        }
        DOM_li.appendChild(DOM_a);
        DOM_ul.appendChild(DOM_li);
    }
    e.insertBefore(DOM_ul, e.firstChild);
    e.className = e.className.replace(this.REclassMain, this.classMainLive);
    this.tabShow(defaultTab);
    if (typeof this.onLoad == 'function') {
        this.onLoad({tabber : this});
    }
    return this;
};
tabberObj.prototype.navClick = function(event) {
    var rVal, a, self, tabberIndex, onClickArgs;
    a = this;
    if (!a.tabber) {
        return false;
    }
    self        = a.tabber;
    tabberIndex = a.tabberIndex;
    a.blur();
    if (typeof self.onClick == 'function') {
        onClickArgs = {'tabber' : self, 'index' : tabberIndex, 'event' : event};
        if (!event) {
            onClickArgs.event = window.event;
        }
        rVal = self.onClick(onClickArgs);
        if (rVal === false) {
            return false;
        }
    }
    self.tabShow(tabberIndex);
    return false;
};
tabberObj.prototype.tabHideAll = function() {
    var i;
    for (i = 0; i < this.tabs.length; i++) {
        this.tabHide(i);
    }
};
tabberObj.prototype.tabHide = function(tabberIndex) {
    var div;
    if (!this.tabs[tabberIndex]) {
        return false;
    }
    div = this.tabs[tabberIndex].div;
    if (!div.className.match(this.REclassTabHide)) {
        div.className += ' ' + this.classTabHide;
    }
    this.navClearActive(tabberIndex);
    return this;
};
tabberObj.prototype.tabShow = function(tabberIndex) {
    var div;
    if (!this.tabs[tabberIndex]) {
        return false;
    }
    this.tabHideAll();
    div           = this.tabs[tabberIndex].div;
    div.className = div.className.replace(this.REclassTabHide, '');
    this.navSetActive(tabberIndex);
    if (typeof this.onTabDisplay == 'function') {
        this.onTabDisplay({'tabber' : this, 'index' : tabberIndex});
    }
    return this;
};
tabberObj.prototype.navSetActive = function(tabberIndex) {
    this.tabs[tabberIndex].li.className = this.classNavActive;
    return this;
};
tabberObj.prototype.navClearActive = function(tabberIndex) {
    this.tabs[tabberIndex].li.className = '';
    return this;
};
function tabberAutomatic(tabberArgs)
{
    var tempObj, divs, i;
    if (!tabberArgs) {
        tabberArgs = {};
    }
    tempObj = new tabberObj(tabberArgs);
    divs    = document.getElementsByTagName("div");
    for (i = 0; i < divs.length; i++) {
        if (divs[i].className && divs[i].className.match(tempObj.REclassMain)) {
            tabberArgs.div = divs[i];
            divs[i].tabber = new tabberObj(tabberArgs);
        }
    }
    return this;
}
function tabberAutomaticOnLoad(tabberArgs)
{
    var oldOnLoad;
    if (!tabberArgs) {
        tabberArgs = {};
    }
    oldOnLoad = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = function() { tabberAutomatic(tabberArgs); };
    } else {
        window.onload = function() {
            oldOnLoad();
            tabberAutomatic(tabberArgs);
        };
    }
}
if (typeof tabberOptions == 'undefined') {
    tabberAutomaticOnLoad();
} else {
    if (!tabberOptions['manualStartup']) {
        tabberAutomaticOnLoad(tabberOptions);
    }
}
