var openImg = new Image();
openImg.src = "/images/siteexp_open.gif";
var closedImg = new Image();
closedImg.src = "/images/siteexp_closed.gif";

function showBranch(branch,folder){
	var objBranch = document.getElementById(branch).style;
	if(objBranch.display=="block")
	{
		objBranch.display="none";
		document.getElementById(folder).src = openImg.src;
	}
	else
	{
		objBranch.display="block";
		document.getElementById(folder).src = closedImg.src;
	}
}

function swapFolder(img){
	objImg = document.getElementById(img);
	if(objImg.src.indexOf('closed.gif')>-1)
		objImg.src = openImg.src;
	else
		objImg.src = closedImg.src;
}