MediaWiki:Common.js

if (mwCustomEditButtons) {
 
   mwCustomEditButtons[mwCustomEditButtons.length] = {
     "imageFile": "http://images.wikia.com/central/images/7/74/Button_comment.png",
     "speedTip": "Comment visible only for editors",
     "tagOpen": "===",
     "tagClose": "===",
     "sampleText": "Secondary Headline"
  }
}

function ModifySidebar(action, section, name, link) {
    try {
        switch (section) {
          case "languages":
            var target = "p-lang";
            break;
          case "toolbox":
            var target = "p-tb";
            break;
          case "navigation":
            var target = "p-navigation";
            break;
          default:
            var target = "p-" + section;
            break;
        }
 
        if (action == "add") {
            var node = document.getElementById(target)
                               .getElementsByTagName('div')[0]
                               .getElementsByTagName('ul')[0];
 
            var aNode = document.createElement('a');
            var liNode = document.createElement('li');
 
            aNode.appendChild(document.createTextNode(name));
            aNode.setAttribute('href', link);
            liNode.appendChild(aNode);
            liNode.className='plainlinks';
            node.appendChild(liNode);
        }
 
        if (action == "remove") {
            var list = document.getElementById(target)
                               .getElementsByTagName('div')[0]
                               .getElementsByTagName('ul')[0];
 
            var listelements = list.getElementsByTagName('li');
 
            for (var i = 0; i < listelements.length; i++) {
                if (listelements[i].getElementsByTagName('a')[0].innerHTML == name ||
                    listelements[i].getElementsByTagName('a')[0].href == link) {
 
                    list.removeChild(listelements[i]);
                }
            }
        }
 
    } catch(e) {
      // lets just ignore what's happened
      return;
    }
}
 
function CustomizeModificationsOfSidebar() {

    //adds [[Special:Sponsors]] to toolbox
    ModifySidebar("add", "toolbox", "CategoryTree", "http://www.wheelsofitaly.com/wiki/index.php/Sponsors");

    //removes [[Special:Upload]] from toolbox
    ModifySidebar("remove", "toolbox", "Upload file", "http://en.wikipedia.org/wiki/Special:Upload");
}
 
addOnloadHook(CustomizeModificationsOfSidebar);