function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}

function addClass(element,value) {
  if (!element.className) {
    element.className = value;
  } else {
    newClassName = element.className;
    newClassName+= " ";
    newClassName+= value;
    element.className = newClassName;
  }
}

function removeFriendLinks() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("footer")) return false;
  var gallery = document.getElementById("footer");
  var lists = gallery.getElementsByTagName("li");
  lists[lists.length - 1].parentNode.removeChild(lists[lists.length - 1]);
}

function showCurrentNav() {
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;
	if (!document.getElementById("sidebar")) return false;
	var sidebar = document.getElementById("sidebar");
	var links = sidebar.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++) {
		var linkUrl = links[i].getAttribute("href");
		var currentUrl = window.location.href;
		if (currentUrl.indexOf(linkUrl) != -1) {
			addClass(links[i], "thisclass");
			break;
		}	
	}
	
}
addLoadEvent(showCurrentNav);