var mbW=250;
var mbO=[],mbP=[],mbA,mbT,mbTf,ulID;

function mbSet(m,c) {

if (document.getElementById&&document.createElement) {
    var m=document.getElementById(m);
    m.className=c;
    var e,f,i,j;

    var e=m.firstChild;
    while (e) {
        if (e.tagName=='LI') {
            var div=document.createElement('div');
            while (e.firstChild) {
                div.appendChild(e.firstChild);
            }
            e.appendChild(div);
        }
        e=e.nextSibling;
    }

    e=m.getElementsByTagName('a');
    if (!mbTf) mbTf=new Function('mbHAT();');
    for (i=0;i<e.length;i++) {
        e[i].onmouseout=e[i].onblur=mbTf;
    }
	
	
    m=m.getElementsByTagName('ul');
    for (i=0;i<m.length;i++) {
		ulID = 'mnu_'+(i+1);
        m[i].id = ulID;
        if (j=m[i].id) {
            mbO[j]=m[i];
            e=m[i].parentNode;
            f=e.parentNode.getAttribute('id');
            if (mbO[f]) {
                mbP[j]=f;
            }
            f=new Function('mbS(\''+j+'\');');
            e=e.getElementsByTagName('a');
            for (c=0;c<e.length;c++) {
                e[c].onmouseover=e[c].onfocus=f;
            }
            mbH(j);
        }
    }
}}

function mbHA() {
    if (mbA) {
        while (mbA) mbH(mbA);
        mbHE('visible');
    }
}

function mbHAT() {
    if (!mbT) mbT=setTimeout('mbHA();', mbW);
}

function mbTC() {
    if (mbT) {
        clearTimeout(mbT);
        mbT=null;
    }
}

function mbS(m) {
    mbTC();
    if (mbA) while (mbA&&m!=mbA&&mbP[m]!=mbA) mbH(mbA);
    else mbHE('hidden');

    mbSH(m,'visible');
    mbA=m;
}

function mbH(m) {
    if (m==mbA) mbA=mbP[m];
    mbSH(m,'hidden');
    mbT=null;
}

function mbSH(m,v) {
    mbO[m].parentNode.firstChild.className=v;
    mbO[m].style.visibility=v;
}

function mbHE(v) {
    //mbHEV(v,document.getElementsByTagName('select'));
}

function mbHEV(v,e) {
    for (var i=0;i<e.length;i++) e[i].style.visibility=v;
}

function installCascadingMenu(navId){
    if (document.getElementById(navId))
        mbSet(navId, 'mb');
}

function Init(){
    installCascadingMenu('nav');
}