var openImg = new Image();		openImg.src = "images/arrow_opened.gif";
var closedImg = new Image();	closedImg.src = "images/arrow_closed.gif";

function doBranch(branch, img)
{
 var objBranch = document.getElementById(branch).style;
 if(objBranch.display=="block") objBranch.display="none";
 else objBranch.display="block";
 objImg = document.getElementById(img);
 if(objImg.src.indexOf('images/arrow_closed.gif')>-1) objImg.src = openImg.src;
 else objImg.src = closedImg.src;
}



function changeImage(imgName, imgSrc){
 document.images[imgName].src = imgSrc.src;
}

var ns=(document.layers);
var ie=(document.all);
var w3=(document.getElementById && !ie);
var calunit=ns? "" : "px"

function showVid(theText){
	document.getElementById("largeDivContentText").innerHTML=document.getElementById(theText).value;

	if(!ns && !ie && !w3) return;
	if (ie){
	 documentWidth=truebody().offsetWidth/2+truebody().scrollLeft-20;
	 documentHeight =truebody().offsetHeight/2+truebody().scrollTop-20;
	}
	if (ns){
	 documentWidth=window.innerWidth/2+window.pageXOffset-20;
	 documentHeight=window.innerHeight/2+window.pageYOffset-20;
	} 
	if (w3){
	 documentWidth=self.innerWidth/2+window.pageXOffset-20;
	 documentHeight=self.innerHeight/2+window.pageYOffset-20;
	} 
    document.getElementById("overlayDiv").style.display="block";
	document.getElementById("largeDiv").style.left=0+calunit;
	document.getElementById("largeDiv").style.top=documentHeight-250+calunit;
    document.getElementById("largeDiv").style.display="block";
}

function closeLarge(){
	document.getElementById("largeDivContentText").innerHTML="";
    document.getElementById("largeDiv").style.display="none";
    document.getElementById("overlayDiv").style.display="none";
}

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