User:Cryptic/toggleundelete.js

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//<pre><nowiki>
function toggle_undelete()
{
  var f = document.getElementById("undelete");
  if (f)
    {
      var inputs = f.getElementsByTagName("input");
      var i;
      for (i = 0; i < inputs.length; ++i)
        if (inputs[i].type == "checkbox")
          inputs[i].checked = !inputs[i].checked;
    }
}

function setup_toggle_undelete()
{
  if (document.title == "View and restore deleted pages - Wikipedia, the free encyclopedia")
    {
      var f = document.getElementById("undelete");
      if (f)
        {
          var h2 = f.getElementsByTagName("h2")[0];
          if (h2)
            {
              var button = document.createElement('input');
              button.type = "button";
              button.value = "Invert";
              button.setAttribute('onClick', 'toggle_undelete()');
              f.insertBefore(button, h2);
            }
        }
    }
}

addOnloadHook(setup_toggle_undelete);
//</nowiki></pre>