var openImg = new Image();
		openImg.src = "img/open.gif";
		var closedImg = new Image();
		closedImg.src = "img/closed.gif";
		
		function showBranch(branch) {
		  if ((branch != "branch1") && (branch != "branch1a") && (branch != "branch1b")
		   && (branch != "branch1c") && (branch != "branch1d")) {
			  document.getElementById("branch1").style.display = "none";
			  document.getElementById("folder1").src = closedImg.src;
			}			
		  if (branch != "branch1a") {
			  document.getElementById("branch1a").style.display = "none";
			  document.getElementById("folder1a").src = closedImg.src;
			}
		  if (branch != "branch1b") {
			  document.getElementById("branch1b").style.display = "none";
			  document.getElementById("folder1b").src = closedImg.src;
			}
		  if (branch != "branch1a") {
			  document.getElementById("branch1c").style.display = "none";
			  document.getElementById("folder1c").src = closedImg.src;
			}
		  if (branch != "branch1d") {
			  document.getElementById("branch1d").style.display = "none";
			  document.getElementById("folder1d").src = closedImg.src;
			}					
		  if (branch != "branch2") {
			  document.getElementById("branch2").style.display = "none";
			  document.getElementById("folder2").src = closedImg.src;
			}
		  if (branch != "branch3") {
			  document.getElementById("branch3").style.display = "none";
			  document.getElementById("folder3").src = closedImg.src;
			}
		  if (branch != "branch4") {
			  document.getElementById("branch4").style.display = "none";
			  document.getElementById("folder4").src = closedImg.src;
			}
		  if (branch != "branch5") {
			  document.getElementById("branch5").style.display = "none";
			  document.getElementById("folder5").src = closedImg.src;
			}
		  if (branch != "branch6") {
			  document.getElementById("branch6").style.display = "none";
			  document.getElementById("folder6").src = closedImg.src;
			}
		  if (branch != "branch7") {
			  document.getElementById("branch7").style.display = "none";
			  document.getElementById("folder7").src = closedImg.src;
			}
		  if (branch != "branch8") {
			  document.getElementById("branch8").style.display = "none";
			  document.getElementById("folder8").src = closedImg.src;
			}
		  if (branch != "branch9") {
			  document.getElementById("branch9").style.display = "none";
			  document.getElementById("folder9").src = closedImg.src;
			}
		  var objBranch = 
		     document.getElementById(branch).style;
		  if(objBranch.display=="block")
		     objBranch.display="none";
		  else
		     objBranch.display="block";
		}
		
		function swapFolder(img) {
		  objImg = document.getElementById(img);
		  if(objImg.src.indexOf('closed.gif')>-1)
		     objImg.src = openImg.src;
		  else
		     objImg.src = closedImg.src;
   		}
 
 
 
 <!-- CODE OBTAIN FROM http://gethelp.devx.com/, BY Tom Duffy.
 http://gethelp.devx.com/techtips/dhtml_pro/10min/10min0702/td072602-1.asp -->