var hoverClass = "AspNet-Menu-Hover";
var topmostClass = "AspNet-Menu";
var userAgent = navigator.userAgent;
var versionOffset = userAgent.indexOf("MSIE");
var isIE = (versionOffset >= 0);
var isPreIE7 = false;
var fullVersionIE = "";
var majorVersionIE = "";
if (isIE) {
    fullVersionIE = parseFloat(userAgent.substring(versionOffset + 5, userAgent.length));
    majorVersionIE = parseInt('' + fullVersionIE);
    isPreIE7 = majorVersionIE < 7;
}

function Hover__AspNetMenu(element) {
    AddClass__CssFriendlyAdapters(element, hoverClass);

    if (true) {
        var child = element.firstChild;
        while (child) {
            if (child.tagName == "UL") {
                var grandchild = child.firstChild;
                while (grandchild) {
                    if (grandchild.tagName == "LI") {
                        if ((typeof (grandchild.iFrameFormElementMask) != "undefined") && (grandchild.iFrameFormElementMask != null)) {
                            grandchild.iFrameFormElementMask.style.display = "inline";

                            var w = grandchild.offsetWidth;
                            if ((grandchild.offsetWidth == 0) && (typeof (element.iFrameFormElementMask) != "undefined") && (element.iFrameFormElementMask != null) && (element.iFrameFormElementMask.style.width.length > 0)) {
                                w = element.iFrameFormElementMask.style.width;
                            }
                            grandchild.iFrameFormElementMask.style.width = w;

                            var h = grandchild.offsetHeight + 5 /* fudge to cover margins between menu items */;
                            if ((grandchild.offsetHeight == 0) && (typeof (element.iFrameFormElementMask) != "undefined") && (element.iFrameFormElementMask != null) && (element.iFrameFormElementMask.style.height.length > 0)) {
                                h = element.iFrameFormElementMask.style.height;
                            }
                            grandchild.iFrameFormElementMask.style.height = h;
                        }
                    }

                    grandchild = grandchild.nextSibling;
                }
            }

            child = child.nextSibling;
        }
    }
}

function Unhover__AspNetMenu(element) {
    RemoveClass__CssFriendlyAdapters(element, hoverClass);

    if (isPreIE7) {
        var child = element.firstChild;
        while (child) {
            if (child.tagName == "UL") {
                var grandchild = child.firstChild;
                while (grandchild) {
                    if (grandchild.tagName == "LI") {
                        if ((typeof (grandchild.iFrameFormElementMask) != "undefined") && (grandchild.iFrameFormElementMask != null)) {
                            grandchild.iFrameFormElementMask.style.display = "none";
                        }
                    }

                    grandchild = grandchild.nextSibling;
                }
            }

            child = child.nextSibling;
        }
    }
}

function SetHover__AspNetMenu() {
    var menus = document.getElementsByTagName("ul");
    for (var i = 0; i < menus.length; i++) {
        if (menus[i].className == topmostClass) {
            var items = menus[i].getElementsByTagName("li");
            for (var k = 0; k < items.length; k++) {
                items[k].onmouseover = function() { Hover__AspNetMenu(this); }
                items[k].onmouseout = function() { Unhover__AspNetMenu(this); }

                if (isPreIE7 && ((typeof (items[k].iFrameFormElementMask) == "undefined") || (items[k].iFrameFormElementMask == null))) {
                    var iFrameFormElementMask = document.createElement("IFRAME");
                    iFrameFormElementMask.scrolling = "no";
                    iFrameFormElementMask.src = "javascript:false;";
                    iFrameFormElementMask.frameBorder = 0;
                    iFrameFormElementMask.style.display = "none";
                    iFrameFormElementMask.style.position = "absolute";
                    iFrameFormElementMask.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)";

                    iFrameFormElementMask.style.zIndex = -1;
                    items[k].insertBefore(iFrameFormElementMask, items[k].firstChild);
                    items[k].iFrameFormElementMask = iFrameFormElementMask;
                }
            }
        }
    }
}

//if (isPreIE7) {
    addLoadEvent(SetHover__AspNetMenu);
//}

function CanHaveClass__CssFriendlyAdapters(element) {
    return ((element != null) && (element.className != null));
}

function HasAnyClass__CssFriendlyAdapters(element) {
    return (CanHaveClass__CssFriendlyAdapters(element) && (element.className.length > 0));
}

function HasClass__CssFriendlyAdapters(element, specificClass) {
    return (HasAnyClass__CssFriendlyAdapters(element) && (element.className.indexOf(specificClass) > -1));
}

function AddClass__CssFriendlyAdapters(element, classToAdd) {
    if (HasAnyClass__CssFriendlyAdapters(element)) {
        if (!HasClass__CssFriendlyAdapters(element, classToAdd)) {
            element.className = element.className + " " + classToAdd;
        }
    }
    else if (CanHaveClass__CssFriendlyAdapters(element)) {
        element.className = classToAdd;
    }
}

function AddClassUpward__CssFriendlyAdapters(startElement, stopParentClass, classToAdd) {
    var elementOrParent = startElement;
    while ((elementOrParent != null) && (!HasClass__CssFriendlyAdapters(elementOrParent, topmostClass))) {
        AddClass__CssFriendlyAdapters(elementOrParent, classToAdd);
        elementOrParent = elementOrParent.parentNode;
    }
}

function SwapClass__CssFriendlyAdapters(element, oldClass, newClass) {
    if (HasAnyClass__CssFriendlyAdapters(element)) {
        element.className = element.className.replace(new RegExp(oldClass, "gi"), newClass);
    }
}

function SwapOrAddClass__CssFriendlyAdapters(element, oldClass, newClass) {
    if (HasClass__CssFriendlyAdapters(element, oldClass)) {
        SwapClass__CssFriendlyAdapters(element, oldClass, newClass);
    }
    else {
        AddClass__CssFriendlyAdapters(element, newClass);
    }
}

function RemoveClass__CssFriendlyAdapters(element, classToRemove) {
    SwapClass__CssFriendlyAdapters(element, classToRemove, "");
}

function RemoveClassUpward__CssFriendlyAdapters(startElement, stopParentClass, classToRemove) {
    var elementOrParent = startElement;
    while ((elementOrParent != null) && (!HasClass__CssFriendlyAdapters(elementOrParent, topmostClass))) {
        RemoveClass__CssFriendlyAdapters(elementOrParent, classToRemove);
        elementOrParent = elementOrParent.parentNode;
    }
}

function IsEnterKey() {
    var retVal = false;
    var keycode = 0;
    if ((typeof (window.event) != "undefined") && (window.event != null)) {
        keycode = window.event.keyCode;
    }
    else if ((typeof (e) != "undefined") && (e != null)) {
        keycode = e.which;
    }
    if (keycode == 13) {
        retVal = true;
    }
    return retVal;
}

/* Derived from http://simonwillison.net/2004/May/26/addLoadEvent/ */
function addLoadEvent(func) {
    var oldonload = window.onload;

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