var disappeardelay=100  //menu disappear speed onMouseout (in miliseconds)
var enableanchorlink=1 //Enable or disable the anchor link when clicked on? (1=e, 0=d)
var hidemenu_onclick=1 //hide menu when user clicks within menu? (1=yes, 0=no)
var horizontaloffset= -99 //horizontal offset of menu from default location. (0-5 is a good value)
var verticaloffset = 29 //vertical offset for top of popup

//popup menu functions

var ie5=document.all;
var ns6=document.getElementById&&!document.all;
var lastTab = "";

function getposOffset(what, offsettype){
    var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
    var parentEl=what.offsetParent;
    while (parentEl!=null){
        totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
        parentEl=parentEl.offsetParent;
    }
    return totaloffset;
}

function showhide(obj, e, visible, hidden){
    if (ie5 || ns6) {
        dropmenuobj.style.left = dropmenuobj.style.top = -500;
        
    }
    if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover") {
        obj.visibility = visible;
    }
    else if (e.type == "click") {
        obj.visibility = hidden;
        deselectTabs();
    }
}

//fix to remove hilight from mouseover tab
function deselectTabs() {
    out("tab_experience");
    out("tab_code");
}

function iecompattest(){
    return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function clearbrowseredge(obj, whichedge){
    var edgeoffset = 0;
    var windowedge = 0;
    
    if (whichedge=="rightedge"){
        windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15;
        dropmenuobj.contentmeasure=dropmenuobj.offsetWidth;
        if (windowedge-dropmenuobj.x-obj.offsetWidth < dropmenuobj.contentmeasure)
            edgeoffset=dropmenuobj.contentmeasure+obj.offsetWidth+(horizontaloffset*2); //no space to the right of page? Move menu over to the left
    }
    else{
        var topedge=ie5 && !window.opera? iecompattest().scrollTop : window.pageYOffset;
        windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18;
        dropmenuobj.contentmeasure=dropmenuobj.offsetHeight;
        if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move menu up?
            edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight;
        if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either? (position at top of viewable window then)
            edgeoffset=dropmenuobj.y;
        }
    }
    return edgeoffset
}

function dropdownmenu(obj, e, dropmenuID)
{
    if (obj.className == "menu_btn_disabled" || pageIsLoading) { return true; }

    lastTab = dropmenuID;

    if (window.event) {
        event.cancelBubble=true;
    }
    else{ 
        if (e.stopPropagation) 
            e.stopPropagation();
    }
    if (typeof dropmenuobj != "undefined") //hide previous menu
    {
        dropmenuobj.style.visibility = "hidden";
    }
    
    clearhidemenu();
    if (ie5||ns6){
        obj.onmouseout=delayhidemenu;
        dropmenuobj=document.getElementById(dropmenuID);
        if (hidemenu_onclick)
            dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden';}
    
        dropmenuobj.onmouseover=clearhidemenu;
        dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
        showhide(dropmenuobj.style, e, "visible", "hidden");
        dropmenuobj.x=getposOffset(obj, "left");
        dropmenuobj.y=getposOffset(obj, "top");
        dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+obj.offsetWidth+horizontaloffset+"px";
        dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+verticaloffset+"px";
    }
    return clickreturnvalue();
}

function clickreturnvalue(){
    if ((ie5||ns6) && !enableanchorlink) 
        return false;
    else 
        return true;
}

function contains_ns6(a, b) {
    while (b.parentNode){
        if ((b = b.parentNode) == a)
            return true;
    }
    return false;
}

function dynamichide(e){
    if (ie5&&!dropmenuobj.contains(e.toElement))
        delayhidemenu();
    else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
        delayhidemenu();
}

function delayhidemenu(){
    delayhide=setTimeout("hidemenuTimeout()",disappeardelay);
}
function hidemenuTimeout(){
    dropmenuobj.style.visibility='hidden';
    clearTimeout(delayhide);
    deselectTabs();
}

function clearhidemenu(){
    if (typeof delayhide!="undefined")
        clearTimeout(delayhide);
}