/***********************************************
* AnyLink Drop Down Menu- © Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/
		
var menuwidth='' //default menu width
var menubgcolor=''  //menu bgcolor
var disappeardelay=500  //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 ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="tNav"><div id="dropmenudiv" Class="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';font-size:10px;font-face:verdana,arial,helvetica,sans-serif;background-color:'+menubgcolor+'" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div></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, menuclass){
   if (ie4||ns6){
      dropmenuobj.style.left=dropmenuobj.style.top=-500;
   }
   
   if (menuwidth!=""){
      dropmenuobj.widthobj=dropmenuobj.style;
      dropmenuobj.widthobj.width=menuwidth;
   }
   
   if(menuclass!=""){
      dropmenuobj.className="dropmenudiv " + menuclass;
   }
   
   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 windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
}
return edgeoffset
}

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


function dropdownmenu(obj, e, menucontents, menuwidth, menuclass, sName){
   if (window.event){
      event.cancelBubble=true;
      changeImages('btnAbt', '/Images/tabAboutOff.gif', 'btnNet', '/Images/tabNetworkOff.gif', 'btnWrk', '/Images/tabWorkOff.gif', 'btnInv', '/Images/tabInvolveOff.gif', 'btnRes', '/Images/tabResourcesOff.gif');
   }else if (e.stopPropagation){
      e.stopPropagation();
      changeImages('btnAbt', '/Images/tabAboutOn.gif', 'btnNet', '/Images/tabNetworkOn.gif', 'btnWrk', '/Images/tabWorkOn.gif', 'btnInv', '/Images/tabInvolveOn.gif', 'btnRes', '/Images/tabResourcesOn.gif');
   }

   clearhidemenu()
   dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
   populatemenu(menucontents)
   
   dropmenuobj.sName = sName;
   
   if (ie4||ns6){
      showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth, menuclass)
      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"
      
      switch(dropmenuobj.sName){
         case 'btnAbt': 
            changeImages('btnAbt', '/Images/tabAboutOn.gif');
            break;
         case 'btnNet':
            changeImages('btnNet', '/Images/tabNetworkOn.gif');               
            break;
         case 'btnWrk':
            changeImages('btnWrk', '/Images/tabWorkOn.gif');            
            break;
         case 'btnInv':
            changeImages('btnInv', '/Images/tabInvolveOn.gif');            
            break;
         case 'btnRes':
            changeImages('btnRes', '/Images/tabResourcesOn.gif');            
            break;
      }
   }
   
   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){         
         switch(dropmenuobj.sName){
            case 'btnAbt': 
               changeImages('btnAbt', '/Images/tabAboutOff.gif');
               break;
            case 'btnNet':
               changeImages('btnNet', '/Images/tabNetworkOff.gif');               
               break;
            case 'btnWrk':
               changeImages('btnWrk', '/Images/tabWorkOff.gif');            
               break;
            case 'btnInv':
               changeImages('btnInv', '/Images/tabInvolveOff.gif');            
               break;
            case 'btnRes':
               changeImages('btnRes', '/Images/tabResourcesOff.gif');            
               break;
         }     
         
         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
}

//===============================================//

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
   if (document.images && (preloadFlag == true)) {
      for (var i=0; i<changeImages.arguments.length; i+=2) {
         document.getElementById(changeImages.arguments[i]).src = changeImages.arguments[i+1];
      }
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		btnAbt_over = newImage("/Images/tabAboutOn.gif");
		btnNet_over = newImage("/Images/tabNetworkOn.gif");
		btnWrk_over = newImage("/Images/tabWorkOn.gif");
		btnInv_over = newImage("/Images/tabInvolveOn.gif");
		btnRes_over = newImage("/Images/tabResourcesOn.gif");
		preloadFlag = true;
	}
}