var plusImg = new Image();
	plusImg.src = "i/plus.gif";
	var minusImg = new Image();
	minusImg.src = "i/minus.gif";

	function showBranch(id){
		$("#div" + id).slideToggle("slow");
		swapFolder(id);
	}

	function swapFolder(id){
		objImg = document.getElementById("img" + id);
		if(objImg.src.indexOf('i/minus.gif')>-1)
			objImg.src = "i/plus.gif";
		else
			objImg.src = "i/minus.gif";
	}


	function extractPageName(hrefString){
		var arr = hrefString.split('/');
		return  (arr.length < 2) ? hrefString : arr[arr.length-2].toLowerCase() + arr[arr.length-1].toLowerCase();
	}

	function setActiveMenu(arr, crtPage){
		for (var i=0; i < arr.length; i++){
			if(extractPageName(arr[i].href) == crtPage){
				if (arr[i].parentNode.tagName != "DIV"){
					arr[i].className+= arr[i].className?' current':'current';
					//arr[i].className = "current";
					arr[i].parentNode.className = "current";
				}
			}
		}
	}

	function boldNavigationLinks(){
		hrefString = document.location.href ? document.location.href : document.location;

		if (document.getElementById("left-menu") !=null )
			setActiveMenu(document.getElementById("left-menu").getElementsByTagName("a"), extractPageName(hrefString));
	}

	window.onload=function(){
		//sets an active link in the left hand nav to have class added to it
		boldNavigationLinks();
	}