var menuwidth='165px'; //default menu width
var menubgcolor='lightyellow';  //menu bgcolor
var disappeardelay=250;  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick="yes"; //hide menu when user clicks within menu?

/////No further editting needed

var ie4=document.all;
var safari=navigator.userAgent.indexOf('Safari')>0;
var ns6=document.getElementById&&!document.all;

if (ie4||ns6)
    document.write('<div id="dropmenudiv" style="visibility:hidden" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

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, menuwidth) {
    if (ie4||ns6)
        dropmenuobj.style.left=dropmenuobj.style.top=-500;
        
    if (menuwidth!="") {
        dropmenuobj.widthobj=dropmenuobj.style;
        dropmenuobj.widthobj.width=menuwidth;
    }

    if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
        obj.visibility=visible;
    else if (e.type=="click")
        obj.visibility=hidden;
}

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

function clearbrowseredge(obj, whichedge) {
    var edgeoffset=0;
    if (whichedge=="rightedge") {
        var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
        dropmenuobj.contentmeasure=dropmenuobj.offsetWidth;
        if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
            edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
    } else {
        var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
        var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
        dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
        if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
            edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
            if ((dropmenuobj.y-topedge) < dropmenuobj.contentmeasure) //up no good either?
                edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
        }
    }
    
    return edgeoffset;
}

function populatemenu(what){
    if (ie4||ns6)
        dropmenuobj.innerHTML=what.join("");
}


function dropdownmenu(obj, e, menucontents, menuwidth){
    if (menucontents.length == 0)
        return clickreturnvalue();

    if (window.event) event.cancelBubble=true
    else if (e.stopPropagation) e.stopPropagation()
    clearhidemenu()
    dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
    populatemenu(menucontents)

    if (ie4||ns6){
        if (!ns6||safari)
            showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
        dropmenuobj.x=getposOffset(obj, "left");
        dropmenuobj.y=getposOffset(obj, "top")
        dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
        dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
        if (ns6&&!safari) showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
    }

    return clickreturnvalue();
}

function clickreturnvalue(){
    if (ie4||ns6) 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 (ie4&&!dropmenuobj.contains(e.toElement))
        delayhidemenu()
    else if (ns6 && e.currentTarget != e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
        delayhidemenu()
}

function hidemenu(e){
    if (typeof dropmenuobj!="undefined"){
        if (ie4||ns6)
            dropmenuobj.style.visibility="hidden"
    }
}

function delayhidemenu(){
    if (ie4||ns6)
        delayhide=setTimeout("hidemenu()",disappeardelay)
}

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

if (hidemenu_onclick=="yes")
    document.onclick=hidemenu