function Browser() {
    var ua,
    s,
    i;
    this.isIE = 0;
    this.isOP = 0;
    this.isNS = 0;
    this.version = null;
    ua = navigator.userAgent;
    s = "Opera";
    if ((i = ua.indexOf(s)) >= 0) {
        this.isOP = 1;
        this.version = parseFloat(ua.substr(i + s.length));
        return;
    }
    s = "Netscape6/";
    if ((i = ua.indexOf(s)) >= 0) {
        this.isNS = 1;
        this.version = parseFloat(ua.substr(i + s.length));
        return;
    }
    s = "Gecko";
    if ((i = ua.indexOf(s)) >= 0) {
        this.isNS = 1;
        this.version = 6.1;
        return;
    }
    s = "MSIE";
    if ((i = ua.indexOf(s))) {
        this.isIE = 1;
        this.version = parseFloat(ua.substr(i + s.length));
        return;
    }
}
var browser = new Browser();
var activeButton = null;
function buttonClick(event, menuId) {
    var button;
    if (browser.isIE) button = window.event.srcElement;
    else button = event.currentTarget;
    button.blur();
    if (button.menu == null) {
        button.menu = document.getElementById(menuId);
        if (button.menu.isInitialized == null) menuInit(button.menu);
    }
    if (button.onmouseout == null) button.onmouseout = buttonOrMenuMouseout;
    if (button == activeButton) return 0;
    if (activeButton != null) resetButton(activeButton);
    if (button != activeButton) {
        depressButton(button);
        activeButton = button;
    } else activeButton = null;
    return 0;
}
function buttonMouseover(event, menuId) {
    var button;
    if (activeButton == null) {
        buttonClick(event, menuId);
        return;
    }
    if (browser.isIE) button = window.event.srcElement;
    else button = event.currentTarget;
    if (activeButton != null && activeButton != button) buttonClick(event, menuId);
}
function depressButton(button) {
    var x,
    y;
    button.className += " menuButtonActive";
    if (button.onmouseout == null) button.onmouseout = buttonOrMenuMouseout;
    if (button.menu.onmouseout == null) button.menu.onmouseout = buttonOrMenuMouseout;
    x = getPageOffsetLeft(button);
    y = getPageOffsetTop(button) + button.offsetHeight;
    if (browser.isIE) {
        x += button.offsetParent.clientLeft;
        y += button.offsetParent.clientTop;
    }
    button.menu.style.left = x + "px";
    button.menu.style.top = y + "px";
    button.menu.style.visibility = "visible";
    if (button.menu.iframeEl != null) {
        button.menu.iframeEl.style.left = button.menu.style.left;
        button.menu.iframeEl.style.top = button.menu.style.top;
        button.menu.iframeEl.style.width = button.menu.offsetWidth + "px";
        button.menu.iframeEl.style.height = button.menu.offsetHeight + "px";
        button.menu.iframeEl.style.display = "";
    }
}
function resetButton(button) {
    removeClassName(button, "menuButtonActive");
    if (button.menu != null) {
        closeSubMenu(button.menu);
        button.menu.style.visibility = "hidden";
        if (button.menu.iframeEl != null) button.menu.iframeEl.style.display = "none";
    }
}
function menuMouseover(event) {
    var menu;
    if (browser.isIE) menu = getContainerWith(window.event.srcElement, "DIV", "menu");
    else menu = event.currentTarget;
    if (menu.activeItem != null) closeSubMenu(menu);
}
function menuItemMouseover(event, menuId) {
    var item,
    menu,
    x,
    y;
    if (browser.isIE) item = getContainerWith(window.event.srcElement, "A", "menuItem");
    else item = event.currentTarget;
    menu = getContainerWith(item, "DIV", "menu");
    if (menu.activeItem != null) closeSubMenu(menu);
    menu.activeItem = item;
    item.className += " menuItemHighlight";
    if (item.subMenu == null) {
        item.subMenu = document.getElementById(menuId);
        if (item.subMenu.isInitialized == null) menuInit(item.subMenu);
    }
    if (item.subMenu.onmouseout == null) item.subMenu.onmouseout = buttonOrMenuMouseout;
    x = getPageOffsetLeft(item) + item.offsetWidth;
    y = getPageOffsetTop(item);
    var maxX,
    maxY;
    if (browser.isIE) {
        maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) + (document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth: document.body.clientWidth);
        maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) + (document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight: document.body.clientHeight);
    }
    if (browser.isOP) {
        maxX = document.documentElement.scrollLeft + window.innerWidth;
        maxY = document.documentElement.scrollTop + window.innerHeight;
    }
    if (browser.isNS) {
        maxX = window.scrollX + window.innerWidth;
        maxY = window.scrollY + window.innerHeight;
    }
    maxX -= item.subMenu.offsetWidth;
    maxY -= item.subMenu.offsetHeight;
    if (x > maxX) x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth + (menu.offsetWidth - item.offsetWidth));
    y = Math.max(0, Math.min(y, maxY));
    item.subMenu.style.left = x + "px";
    item.subMenu.style.top = y + "px";
    item.subMenu.style.visibility = "visible";
    if (item.subMenu.iframeEl != null) {
        item.subMenu.iframeEl.style.left = item.subMenu.style.left;
        item.subMenu.iframeEl.style.top = item.subMenu.style.top;
        item.subMenu.iframeEl.style.width = item.subMenu.offsetWidth + "px";
        item.subMenu.iframeEl.style.height = item.subMenu.offsetHeight + "px";
        item.subMenu.iframeEl.style.display = "";
    }
    if (browser.isIE) window.event.cancelBubble = 1;
    else event.stopPropagation();
}
function closeSubMenu(menu) {
    if (menu == null || menu.activeItem == null) return;
    if (menu.activeItem.subMenu != null) {
        closeSubMenu(menu.activeItem.subMenu);
        menu.activeItem.subMenu.style.visibility = "hidden";
        if (menu.activeItem.subMenu.iframeEl != null) menu.activeItem.subMenu.iframeEl.style.display = "none";
        menu.activeItem.subMenu = null;
    }
    removeClassName(menu.activeItem, "menuItemHighlight");
    menu.activeItem = null;
}
function buttonOrMenuMouseout(event) {
    var el;
    if (activeButton == null) return;
    if (browser.isIE) el = window.event.toElement;
    else if (event.relatedTarget != null) el = (event.relatedTarget.tagName ? event.relatedTarget: event.relatedTarget.parentNode);
    if (getContainerWith(el, "DIV", "menu") == null) {
        resetButton(activeButton);
        activeButton = null;
    }
}
function menuInit(menu) {
    var itemList,
    spanList;
    var textEl;
    var itemWidth;
    var w,
    dw;
    var i,
    j;
    if (browser.isIE) {
        menu.style.lineHeight = "2.5ex";
        spanList = menu.getElementsByTagName("SPAN");
    }
    itemList = menu.getElementsByTagName("A");
    if (itemList.length > 0) itemWidth = itemList[0].offsetWidth;
    else return;
    for (i = 0; i < itemList.length; i++) {
        spanList = itemList[i].getElementsByTagName("SPAN");
        textEl = null;
        for (j = 0; j < spanList.length; j++) {
            if (hasClassName(spanList[j], "menuItemText")) textEl = spanList[j];
        }
        if (textEl != null) {
            textEl.style.paddingRight = (itemWidth - (textEl.offsetWidth)) + "px";
        }
    }
    if (browser.isIE) {
        w = itemList[0].offsetWidth;
        itemList[0].style.width = w + "px";
        dw = itemList[0].offsetWidth - w;
        w -= dw;
        itemList[0].style.width = w + "px";
    }
    if (browser.isIE) {
        var iframeEl = document.createElement("IFRAME");
        iframeEl.frameBorder = 0;
        iframeEl.src = "javascript:0;";
        iframeEl.style.display = "none";
        iframeEl.style.position = "absolute";
        iframeEl.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)";
        menu.iframeEl = menu.parentNode.insertBefore(iframeEl, menu);
    }
    menu.isInitialized = 1;
}
function getContainerWith(node, tagName, className) {
    while (node != null) {
        if (node.tagName != null && node.tagName == tagName && hasClassName(node, className)) return node;
        node = node.parentNode;
    }
    return node;
}
function hasClassName(el, name) {
    var i,
    list;
    list = el.className.split(" ");
    for (i = 0; i < list.length; i++) if (list[i] == name) return 1;
    return 0;
}
function removeClassName(el, name) {
    var i,
    curList,
    newList;
    if (el.className == null) return;
    newList = new Array();
    curList = el.className.split(" ");
    for (i = 0; i < curList.length; i++) if (curList[i] != name) newList.push(curList[i]);
    el.className = newList.join(" ");
}
function getPageOffsetLeft(el) {
    var x;
    x = el.offsetLeft;
    if (el.offsetParent != null) x += getPageOffsetLeft(el.offsetParent);
    return x;
}
function getPageOffsetTop(el) {
    var y;
    y = el.offsetTop;
    if (el.offsetParent != null) y += getPageOffsetTop(el.offsetParent);
    return y;
}