var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
function getRef(id) {
    if (isDOM) return document.getElementById(id);
    if (isIE4) return document.all[id];
    if (isNS4) return document.layers[id]; 
}

function getSty(id) {
    return (isNS4 ? getRef(id) : getRef(id).style);
}

var popTimer = 0;
var litNow = new Array();

function popOver(menuNum, itemNum) {

    clearTimeout(popTimer);

    hideAllBut(menuNum);

    litNow = getTree(menuNum, itemNum);

    changeCol(litNow, true);

    targetNum = menu[menuNum][itemNum].target;

    if (targetNum > 0) {

    thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);

    thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);

    with (menu[targetNum][0].ref) {

        left = parseInt(thisX + menu[targetNum][0].x);

        top = parseInt(thisY + menu[targetNum][0].y);

        visibility = 'visible';

        }

    }

}

function popOut(menuNum, itemNum) {

    if ((menuNum == 0) && !menu[menuNum][itemNum].target)

    hideAllBut(0)

    else

    popTimer = setTimeout('hideAllBut(0)', 500);

}

function getTree(menuNum, itemNum) {
    itemArray = new Array(menu.length);
    while(1) {
        itemArray[menuNum] = itemNum;
        if (menuNum == 0) return itemArray;
        itemNum = menu[menuNum][0].parentItem;
        menuNum = menu[menuNum][0].parentMenu;
    }
}

function changeCol(changeArray, isOver) {

for (menuCount = 0; menuCount < changeArray.length; menuCount++) {

if (changeArray[menuCount]) {

newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;

 

with (menu[menuCount][changeArray[menuCount]].ref) {

if (isNS4) bgColor = newCol;

else backgroundColor = newCol;

         }

      }

   }

}

function hideAllBut(menuNum) {

    var keepMenus = getTree(menuNum, 1);
    for (count = 0; count < menu.length; count++)
    if (!keepMenus[count])
        menu[count][0].ref.visibility = 'hidden';
    changeCol(litNow, false);

}

function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) {
    this.isVert = isVert;
    this.popInd = popInd
    this.x = x;
    this.y = y;
    this.width = width;
    this.overCol = overCol;
    this.backCol = backCol;
    this.borderClass = borderClass;
    this.textClass = textClass;
    this.parentMenu = null;
    this.parentItem = null;
    this.ref = null;
}

function Item(text, href, frame, length, spacing, target) {
    this.text = text;
    this.href = href;
    this.frame = frame;
    this.length = length;
    this.spacing = spacing;
    this.target = target;
    this.ref = null;
}

var menu = new Array();
//var defOver = '#669999', defBack = 'PaleTurquoise';
var defOver = '#999999', defBack = '#FFFFFF';
var defLength = 22; 

function writeMenus(isnnyvn) {
if (!isDOM && !isIE4 && !isNS4) return;

if (isnnyvn != "") { 
    if (isnnyvn == "m") {  
        menu[0] = new Array();
        menu[0][0] = new Menu(false, '', 5, 0, 17, defOver, defBack, '', 'itemText');
        menu[0][1] = new Item('  <img title="back" border=0 src=/img/back.gif />', 'javascript:history.back()', 'corpo', 20, 10, 0);
    }
    else return;
}

else { 
    menu[0] = new Array();
    menu[0][0] = new Menu(false, '', 5, 0, 18, defOver, defBack, '', 'itemText');
    menu[0][1] = new Item('  <img title="" border=0 src=/img/gocasa.gif />', '/nnyvn.php', 'corpo', 20, 10, 0);
    menu[0][2] = new Item('  <img title="" border=0 src=/img/back.gif />', 'javascript:history.back()', 'corpo', 20, 10, 0);
    //menu[0][3] = new Item('  <img title="Tiếng Thơ" border=0 src=/img/kiss.gif width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=T', 'corpo', 20, 10, 0);
    //menu[0][4] = new Item('  <img title="Truyện Văn" border=0 src=/img/butnhom.jpg width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=V', 'corpo', 20, 10, 0);
    menu[0][3] = new Item('  <img title="Photo Album" border=0 src=/img/photoalbum.jpg />', '#', '', 20, 10, 1);
    //menu[0][6] = new Item('  <img title="Âm Nhạc" border=0 src=/img/notnhac.gif width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=S', 'corpo', 20, 10, 0);
    //menu[0][7] = new Item('  <img title="Nhạc & Tiếng hát Việt Nam" border=0 src=/img/nhacnyvn.gif width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=W', 'corpo', 20, 10, 0);
    //menu[0][8] = new Item('  <img title="Thơ phổ nhạc" border=0 src=/img/thophonhac.gif width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=P', 'corpo', 20, 10, 0);
    //menu[0][9] = new Item('  <img title="Thơ diễn ngâm" border=0 src=/img/thongam.gif width=20px height=20 />', '/php/viewtrangweb.php?start=0&type=D', 'corpo', 20, 10, 0);
    //menu[0][4] = new Item('  <img title="Cải lương" border=0 src=/img/cailuong.gif width=20px height=20 />', '/web/cailuong.htm', 'corpo', 20, 10, 0);
    //menu[0][5] = new Item('  <img title="Tân cổ" border=0 src=/img/tanco.gif width=20px height=20 />', '/web/tanco.htm', 'corpo', 20, 10, 0);
    //menu[0][6] = new Item('  <img title="Dân ca bài chòi" border=0 src=/img/baichoi.gif width=20px height=20 />', '/web/baichoi.htm', 'corpo', 20, 10, 0);
    //menu[0][7] = new Item('  <img title="Hài hước" border=0 src=/img/haihuoc.gif width=20px height=20 />', '/web/haihuoc.htm', 'corpo', 20, 10, 0);
    if (isBrowserType() == 1)
        menu[0][4] = new Item('  <img title="Quán nhạc" border=0 src=/img/quannhac.gif width=20px height=20 />', '/quannhac.php', 'corpo', 20, 10, 0);
    else
        menu[0][4] = new Item('  <img title="" border=0 src=/img/quannhac.gif width=1px height=1 />', '#', 'corpo', 1, 1, 0);
    menu[0][5] = new Item('  <img title="Tác phẩm" border=0 src=/img/tacpham.gif width=20px height=20 />', '/php/viewtacpham.php?start=0', 'corpo', 20, 10, 0);
    menu[0][6] = new Item('  <img title="Trang web thơ văn nhạc" border=0 src=/img/doctho.gif width=30px height=20 />', '/php/viewtrangweb.php?start=0', 'corpo', 20, 10, 0);
    menu[0][7] = new Item('  <img title="Văn nghệ sĩ" border=0 src=/img/vannghesi.gif width=30px height=20 />', '/php/member.php?start=0', 'corpo', 20, 10, 0);
    
    menu[1] = new Array();
    menu[1][0] = new Menu(true, '>', 0, 22, 70, defOver, defBack, 'itemBorder', 'itemText');
    menu[1][1] = new Item('  <img title="Văn nghệ sĩ" border=0 width=60 height=20 src=/img/logonnyvn00.jpg />', '/php/member.php', 'corpo', defLength, 0, 0);
    menu[1][2] = new Item('  <img title="Người Việt" border=0 width=60 height=20 src=/img/logonnyvn01.jpg />', 'http://www.flickr.com/photos/nnyvn/show', 'corpo', defLength, 0, 0);
    menu[1][3] = new Item('  <img title="Kiều bào" border=0  width=60 height=20 src=/img/logonnyvn02.jpg />', 'http://www.flickr.com/photos/nnyvn1/show', 'corpo', defLength, 0, 0);
    menu[1][4] = new Item('  <img title="Người yêu Vn" border=0 width=60 height=20 src=/img/logonnyvn03.jpg />', 'http://www.flickr.com/photos/nnyvn2/show', 'corpo', defLength, 0, 0);
    //menu[1][4] = new Item('  <img title="Khán giả VTV4" border=0  width=60 height=20 src=/img/gapgovtv4.jpg />', 'http://www.flickr.com/photos/gapgokhangiavtv4/show', 'corpo', defLength, 0, 0);

}


for (currMenu = 0; currMenu < menu.length; currMenu++) 
    with (menu[currMenu][0]) {
        var str = '', itemX = 0, itemY = 0;
        for (currItem = 1; currItem < menu[currMenu].length; currItem++) 
            with (menu[currMenu][currItem]) {
                var itemID = 'menu' + currMenu + 'item' + currItem;
                var w = (isVert ? width : length);
                var h = (isVert ? length : width);
                
                if (isDOM || isIE4) {
                    str += '<div id="' + itemID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit; ';
                    if (backCol) str += 'background: ' + backCol + '; ';
                    str += '" ';
                }
              
                if (isNS4) {
                    str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
                    if (backCol) str += 'bgcolor="' + backCol + '" ';
                }

                if (borderClass) str += 'class="' + borderClass + '" ';
                str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';
                str += '<table width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '"><tr><td align="left" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';
                
                if (target > 0) {
                    menu[target][0].parentMenu = currMenu;
                    menu[target][0].parentItem = currItem;
                    if (popInd) str += '<td class="' + textClass + '" align="right">' + popInd + '</td>';
                }

            str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
            if (isVert) itemY += length + spacing;
            else itemX += length + spacing;
         
  
        }

        if (isDOM) {
            var newDiv = document.createElement('div');
            document.getElementsByTagName('body').item(0).appendChild(newDiv);
            newDiv.innerHTML = str;
            ref = newDiv.style;
            ref.position = 'absolute';
            ref.visibility = 'hidden';
        }

        if (isIE4) {
            document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
            ref = getSty('menu' + currMenu + 'div');
        }
        if (isNS4) {
            ref = new Layer(0);
            ref.document.write(str);
            ref.document.close();
        }
        for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
            itemName = 'menu' + currMenu + 'item' + currItem;
            if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
            if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
        }
    }

    with(menu[0][0]) {
        ref.left = x;
        ref.top = y;
        ref.visibility = 'visible';
    }
    
   
  
}
document.write('<br />');


var popOldWidth = window.innerWidth;
nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');
if (isNS4) document.captureEvents(Event.CLICK);
document.onclick = clickHandle;

function clickHandle(evt)
{
     if (isNS4) document.routeEvent(evt);
     hideAllBut(0);
}

function moveRoot()
{
    with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5);
}