var menuStack = new Array();
var hiddenElmStack = new Array();
var currentMenu = null;
var closeMenusDelay = null;
var openMenusDelay = null;
var delayTime = 75;  // ms for menu open delay
var topremember = new Array();
topremember['id']=1;
function eraseTimeout(tId) {
    window.clearTimeout(tId);
    return null;
}

function tbButtonMouseOverOrig(id){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    var menuName = id.replace(/Handle/i,'Menu');
    var menu = getLayer(menuName);
    if (currentMenu){
        closeAllMenus();
    }
    popupMenu(id, menu);
}
function tbButtonMouseOver(id, topakt){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    if (openMenusDelay == null){
        openMenusDelay = window.setTimeout("showMenu('"+id+"')", delayTime);
    }
}
function showMenu(id){
    openMenusDelay = eraseTimeout(openMenusDelay);
    var menuName = id.replace(/Handle/i,'Menu');
    var menu = getLayer(menuName);
    if (currentMenu){
        closeAllMenus();
    }
    popupMenu(id, menu);
}
function showSubMenu(id){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    var menuName = id.replace(/Handle/i,'Menu');
    var menu = getLayer(menuName);
    popupSubMenu(id, menu);
}

function popupMenu(handleID, menu){
    if (menu){
        var menuHandle = getLayer(handleID);
        var p=menuHandle;
        var top = p.offsetHeight, left = 5;
        top = 290; //distance from the top where subnavlayer start
        while(p&&p.tagName.toUpperCase()!='BODY'){
            //top+=p.offsetTop;
            left+=p.offsetLeft;
            p=p.offsetParent;
        }
        setMenuVisible(menu, left, top, false);
    }
}

function popupSubMenu(handleID, menu){
    if (menu){
        var menuHandle = getLayer(handleID);
        var p=menuHandle;
        var top = 0, left = p.offsetWidth;
        while(p&&p.tagName.toUpperCase()!='BODY'){
            top+=p.offsetTop;
            left+=p.offsetLeft;
            p=p.offsetParent;
        }
        if (is.ie && is.mac){
            top -= 3;
            left -= 10;
        }
        setMenuVisible(menu, left, top, true);
    }
}

function closeMenusOrig(){
    if (currentMenu){
        setMenuVisibility(currentMenu, false);
    }
}

function closeSubMenus(handle){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    if (menuStack.length > 0){
        for (var i = menuStack.length-1; i >=0; i--){
            var menu = menuStack[menuStack.length-1];
            if (menu.id == handle.getAttribute('parentid')){
                currentMenu = menu;
                break;
            }else{
                closeMenu(menu);
                menuPop();
            }
        }
    }
}

function closeMenu(menu){
    setMenuVisibility(menu, false);
}

function closeMenusOrig(){
    if (menuStack.length > 0){
        for (var i = menuStack.length-1; i >=0; i--){
            var menu = menuPop();
            closeMenu(menu);
        }
    }
    currentMenu = null;
}

function closeMenus(){
    unhiliteMenu(topremember['id']);
    topremember['id']=1;
    if (closeMenusDelay == null){
        closeMenusDelay = window.setTimeout("closeAllMenus()", delayTime);
    }
}

function closeAllMenus(){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    if (menuStack.length > 0){
        for (var i = menuStack.length-1; i >=0; i--){
            //var menu = menuStack.pop();
            var menu = menuPop();
            closeMenu(menu);
        }
    }
    currentMenu = null;
}

function setMenuVisible(menu, x, y, isSubMenu){
    if (menu){
        //menu.x = left;
        //menu.y = top;
        if (isSubMenu){
            if (menu.getAttribute('parentid') == currentMenu.getAttribute('parentid')){
                //menuStack.pop();
                menuPop();
                setMenuVisibility(currentMenu, false);
            }
        }else{
            //menuStack.pop();
            menuPop();
            setMenuVisibility(currentMenu, false);
        }
        currentMenu = menu;
        //menuStack.push(menu);
        menuPush(menu);
        setMenuVisibility(menu, true, x, y);
    }
}

function getLayer(layerid){
    return document.getElementById(layerid);
}

function setMenuVisibility(menu, on, x, y){
    var parent = menu;
    if (menu){
        setLayer(menu.id, !on, x, y);
        if (is.ie){
            if (!on){
                if (!menu.getAttribute('parentid')){
                    showElement("SELECT");
                }
            }else{
                hideElement("SELECT", x, y, menu.offsetWidth, menu.offsetHeight);
            }
        }
    }
}

function menuPop(){
    if (is.ie && (is.mac || !is.ie5_5up)){
        var menu = menuStack[menuStack.length-1];
        var newMenuStack = new Array();
        for (var i = 0; i < menuStack.length-1; i++){
            newMenuStack[newMenuStack.length] = menuStack[i];
        }
        menuStack = newMenuStack;
        return menu;
    }else{
        return menuStack.pop();
    }
}

function menuPush(menu){
    if (is.ie && (is.mac || !is.ie5_5up)){
        menuStack[menuStack.length] = menu;
    }else{
        menuStack.push(menu);
    }
}

function checkBrowserWidth(){
    var windowWidth;
    if (is.ie){
        windowWidth = document.body.clientWidth;
    }else{
        // 17px for scrollbar width
        windowWidth = window.innerWidth - 16;
    }
    if (windowWidth >= 1000){
        showSB('sbContent',true,'sb');
    }else{
        showSB('sbContent',false,'sb');
    }
}

function showSB(id, hideit, imgIdPrefix){
    setLayer(id, !hideit, -1, -1);
    setLayer(imgIdPrefix+'On', !hideit, -1, -1);
    setLayer(imgIdPrefix+'Off', hideit, -1, -1);
}

function setLayer(id, hidden, x, y){
    var layer = getLayer(id);
    setLayerElm(layer, hidden, x, y);
}

function setLayerElm(layer, hideit, x, y){
    if (layer && layer.style){
        if (hideit){
            layer.style.visibility='hidden';
            //layer.style.display='none';
        }else{
            layer.style.display='block';
            layer.style.visibility='visible';
        }
        if (x >=0 && y >= 0){
            layer.style.left = x+'px';
            layer.style.top = y+'px';
        }
    }
}


function hiliteMenu(menuItem){
        if(topremember['id'] == 1 || topremember['id'] !=menuItem){
            unhiliteMenu(topremember['id']);
            menuItem.className = 'primnavi_active';
        topremember['id'] = menuItem;
    }
}

function hiliteoff(){
    unhiliteMenu(topremember['id']);
    topremember['id']=1;
    }

function unhiliteMenu(menuItem){
        menuItem.className = 'primnavi_passive';
}

function hiliteItem(menuItem){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    if (menuItem.getAttribute('avid') == 'false'){
        menuItem.className = 'menuItemHiliteX';
    }else{
        menuItem.className = 'menuItemHilite';
    }
}

function unhiliteItem(menuItem){
    closeMenusDelay = eraseTimeout(closeMenusDelay);
    if (menuItem.getAttribute('avid') == 'false'){
        menuItem.className = 'menuItemX';
    }else{
        menuItem.className = 'menuItem';
    }
}

function showElement(elmID){
    for (i = 0; i < document.getElementsByTagName(elmID).length; i++)   {
        obj = document.getElementsByTagName(elmID)[i];
        if (! obj || ! obj.offsetParent)
            continue;
        obj.style.visibility = "";
    }
}
function showElementNew(elmID){
    if (hiddenElmStack.length > 0){
        for (var i = hiddenElmStack.length-1; i >=0; i--){
            var obj = hiddenElmStack[hiddenElmStack.length-1];
            obj.style.visibility = "";;
            hiddenElmStack.pop();
        }
    }
}

function hideElement(elmID,x,y,w,h){
    for (i = 0; i < document.getElementsByTagName(elmID).length; i++){
        obj = document.getElementsByTagName(elmID)[i];
        if (! obj || ! obj.offsetParent)
            continue;

        // Find the element's offsetTop and offsetLeft relative to the BODY tag.
        objLeft   = obj.offsetLeft;
        objTop    = obj.offsetTop;
        objParent = obj.offsetParent;
        while (objParent.tagName.toUpperCase() != "BODY"){
            objLeft  += objParent.offsetLeft;
            objTop   += objParent.offsetTop;
            objParent = objParent.offsetParent;
        }
        // Adjust the element's offsetTop relative to the dropdown menu
        objTop = objTop - y;

        if (x > (objLeft + obj.offsetWidth) || objLeft > (x + w))
            ;
        else if (objTop > h)
            ;
        else if ((y + h) <= 80)
            ;
        else {
            obj.style.visibility = "hidden";
            //hiddenElmStack.push(obj);
        }
    }
}

function Is (){
    // convert all characters to lowercase to simplify testing
    var agt = navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is.ie5up to detect IE5.
    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    this.nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    this.nav2 = (this.nav && (this.major == 2));
    this.nav3 = (this.nav && (this.major == 3));
    this.nav4 = (this.nav && (this.major == 4));
    this.nav4up = (this.nav && (this.major >= 4));
    this.navonly      = (this.nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );
    this.nav6 = (this.nav && (this.major == 5));
    this.nav6up = (this.nav && (this.major >= 5));
    this.gecko = (agt.indexOf('gecko') != -1);

    this.nav7 = (this.gecko && (this.major >= 5) && (agt.indexOf('netscape/7')!=-1));
    this.moz1 = false;
    this.moz1up = false;
    this.moz1_1 = false;
    this.moz1_1up = false;
    if (this.nav6up){
       myRegEx = new RegExp("rv:\\d*.\\d*.\\d*");
       myFind = myRegEx.exec(agt);
       if(myFind!=null){
         var strVersion = myFind.toString();
         strVersion = strVersion.replace(/rv:/,'');
         var arrVersion = strVersion.split('.');
         var major = parseInt(arrVersion[0]);
         var minor = parseInt(arrVersion[1]);
         if (arrVersion[2]) var revision = parseInt(arrVersion[2]);
         this.moz1 = ((major == 1) && (minor == 0));
         this.moz1up = ((major == 1) && (minor >= 0));
         this.moz1_1 = ((major == 1) && (minor == 1));
         this.moz1_1up = ((major == 1) && (minor >= 1));
      }
    }

    this.ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    this.ie3    = (this.ie && (this.major < 4));
    this.ie4    = (this.ie && (this.major == 4) && (agt.indexOf("msie 4")!=-1) );
    this.ie4up  = (this.ie  && (this.major >= 4));
    this.ie5    = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    this.ie5_5  = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.5") !=-1));
    this.ie5up  = (this.ie  && !this.ie3 && !this.ie4);

    this.ie5_5up =(this.ie && !this.ie3 && !this.ie4 && !this.ie5);
    this.ie6    = (this.ie && (this.major == 4) && (agt.indexOf("msie 6.")!=-1) );
    this.ie6up  = (this.ie  && !this.ie3 && !this.ie4 && !this.ie5 && !this.ie5_5);

    this.mac    = (agt.indexOf("mac") != -1);
}

function checkBrowser (){
    if (!is.ie5up && !is.nav6up){
        //alert('Avid.com is a richly-featured site that requires the latest version of an Internet browser. Please upgrade your browser in order to take full advantage of what the site has to offer.');
    }
}

function runPageLoadItems (){
    var myVar;
    //alert('called');
    checkBrowserWidth();
}
var is = new Is();
checkBrowser();

if (is.ie) {
    document.write('<style type="text/css">');
    document.write('body {font-size: x-small;}');
    document.write ('</style>');
}