var ie4=document.all;
var ns6=document.getElementById&&!document.all;

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';text-align:left;background-color:'+menubgcolor+'" 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='-500px';
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 (window.event) event.cancelBubble=true;
else if (e.stopPropagation) e.stopPropagation();
clearhidemenu();
dropmenuobj=document.getElementById? document.getElementById('dropmenudiv') : dropmenudiv;
populatemenu(menucontents);
if (ie4||ns6){
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';
}
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;