rem: if (btn.nodeName == "button") { 
add: if (btn.nodeName == "toolbarbutton") { 
context: function showRelativePanel(goForward) {  var selectedIndex = -1;  var sidebarBox = document.getElementById("helpsidebar-box");  var sidebarButtons = new Array();  for (var i = 0; i < sidebarBox.childNodes.length; i++) {    var btn = sidebarBox.childNodes[i];    if (btn.nodeName == "button") {      if (btn.getAttribute("selected") == "true")        selectedIndex = sidebarButtons.length;      sidebarButtons.push(btn);    }  }  if (selectedIndex == -1)    return;  selectedIndex += goForward ? 1 : -1;  if (selectedIndex >= sidebarButtons.length)    selectedIndex = 0;  else if (selectedIndex < 0)    selectedIndex = sidebarButtons.length - 1;  sidebarButtons[selectedIndex].doCommand();}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/b3ab7e56259007e72b6bed0fadfb1c1938fe78b1/help.js/buggy/extensions/help/resources/content/help.js