function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
};

function menuFix() {
    $$('ul#root').each(function(link) {
        link.setStyle({ visibility: 'visible' });
    });
    var hlink;
    var shlink;
    var navExists = false
    var tempPath = readCookie("mainPage");
    if (tempPath.length > 1) {
        if (tempPath.substring(tempPath.length - 1, tempPath.length) == "/")
            tempPath = tempPath.substring(0, tempPath.length - 1);
    }
    var fullPath = tempPath;
    while (tempPath.length > 0 && navExists == false) {
        $$('#root li a.mainNav').each(function(link) {
            hlink = link.readAttribute('href');
            if (hlink.length > 1) {
                if (hlink.substring(hlink.length - 1, hlink.length) == "/")
                    hlink = hlink.substring(0, hlink.length - 1);
            }
            if (hlink == tempPath) {
                link.up(0).addClassName('highlight');
                if (link.next('ul')) {
                    link.next('ul').addClassName('subStay');
                    navExists = true;
                    var arr = link.next('ul').descendants();
                    arr.each(function(subLink) {
                        subLink.descendants().each(function(subLinkA) {
                            shlink = subLinkA.readAttribute('href');
                            if (shlink != null && shlink.length > 1) {
                                if (shlink.substring(shlink.length - 1, shlink.length) == "/")
                                    shlink = shlink.substring(0, shlink.length - 1);
                            }
                            if (shlink == fullPath) {
                                subLinkA.up(0).addClassName('highlight');
                            }
                        });
                    });
                };
            }
        });
        tempPath = tempPath.substr(0, tempPath.lastIndexOf("/"));

    }
    if (navExists == false) {
        $$('#root li a.mainNav').each(function(link) {
            hlink = link.readAttribute('href');
            if (hlink.length > 1) {
                if (hlink.substring(hlink.length - 1, hlink.length) == "/")
                    hlink = hlink.substring(0, hlink.length - 1);
            }
            if (hlink == "/") {
                link.up(0).addClassName('highlight');
                link.next('ul').addClassName('subStay');
                var arr = link.next('ul').descendants();
                arr.each(function(subLink) {
                    subLink.descendants().each(function(subLinkA) {
                        if (subLinkA.readAttribute('href') == tempPath) {
                            subLinkA.up(0).addClassName('highlight');
                        }
                    });
                });
            }
        });
        eraseCookie("mainPage");
        createCookie("mainPage", "/", "1");
    }
}

function tribHover() {
    var timeout = 6000;
    var cssClass = "highlight";
    var thisPage = readCookie("mainPage");

    var queue = [];
    var reCSS = new RegExp("\\b" + cssClass + "\\b");
    var tribEls = document.getElementById("root").getElementsByTagName("li");

    for (var i = 0; i < tribEls.length; i++) {
        if (/subStay/.test(tribEls[i].parentNode.className)) {

        } else {

            // mouseover and mouseout handlers for regular mouse based interface.
            tribEls[i].onmouseover = function() {
                queueFlush();
                this.className += " " + cssClass;
                $$('#root li a.mainNav').each(function(link) {
                    if (link.readAttribute('href') == thisPage) {
                        link.up(0).removeClassName(cssClass);
                    }
                });
            }
            tribEls[i].onmouseout = function() {
                queue.push([setTimeout(queueTimeout, timeout), this]);
            }
            // focus and blur handlers for keyboard based navigation.
            tribEls[i].onfocus = function() {
                queueFlush();
                this.className += " " + cssClass;
            }
            tribEls[i].onblur = function() {
                queue.push([setTimeout(queueTimeout, timeout), this]);

                // click event handler needed for tablet type interfaces (e.g. Apple iPhone).
                tribEls[i].onclick = function(e) {
                    if (this.className.search(reCSS) == -1) {
                        // CSS not set, so clear all sibling (and decendants) menus, and then set CSS on this menu...
                        var elems = this.parentNode.getElementsByTagName("li");
                        for (var i = 0; i < elems.length; i++) {
                            elems[i].className = elems[i].className.replace(reCSS, "");
                        }
                        this.className += " " + cssClass;
                    } else {
                        // CSS already set, so clear all decendant menus and then this menu...
                        var elems = this.getElementsByTagName("li");
                        for (var i = 0; i < elems.length; i++) {
                            elems[i].className = elems[i].className.replace(reCSS, "");
                        }
                        this.className = this.className.replace(reCSS, "");
                    }
                    if (e && e.stopPropagation)
                        e.stopPropagation();
                    else
                        window.event.cancelBubble = true;
                }
            }

            queueFlush = function() {
                while (queue.length) {
                    clearTimeout(queue[0][0]);
                    queueTimeout();
                }
            }

            queueTimeout = function() {
                if (queue.length) {
                    var el = queue.shift()[1];
                    el.className = el.className.replace(reCSS, "");
                    $$('#root li a.mainNav').each(function(link) {
                        if (link.readAttribute('href') == thisPage) {
                            link.up(0).addClassName(cssClass);
                            if (link.next('ul')) {
                                var arr = link.next('ul').descendants();
                                arr.each(function(subLink) {
                                    subLink.descendants().each(function(subLinkA) {
                                        if (subLinkA.readAttribute('href') == thisPage) {
                                            subLinkA.up(0).addClassName(cssClass);
                                        }
                                    });
                                });
                            }
                        }
                    });
                }
            }
        }
    }
}