undefined

gistfile1.js

function pelotto(context){
  var a = $x("descendant-or-self::pre", context);
  for (var i=0 ; i<a.length ; ++i) {
    var s = a[i].textContent;
    if ( !/^\s*\/\/ ==UserScript==/.test(s) ) continue;

    var div = document.createElement('div');
    div.style.marginBottom = "1em";
    var l = document.createElement('a');
    l.href = "data:text/html;charset=utf-8," + encodeURI(s) + "//.user.js";
    l.setAttribute("style", "border: 1px solid #666; text-decoration:none; padding: 3px 6px;font-family: Arial; font-size: 10px; background: white; color: black;");
    l.setAttribute("onmousedown", "this.firstChild.style.left = '1px'; this.firstChild.style.top = '1px'");
    l.setAttribute("onmouseup", "this.firstChild.style.left = '0px'; this.firstChild.style.top = '0px'");
    l.innerHTML =
      '<span style="position: relative; left: 0px; top: 0px;">' +
      //'<img src="data:image/gif," width=10 height=8> ' +
      '<span style="font-size: 1.3em; padding-right: 5px; color: #2c2;">»</span>' +
      '<span style="font-weight: bold;">Install this script</span></span>';
    div.appendChild(l);
    a[i].insertBefore(div, a[i].firstChild);
  }
}

function $x(exp, context) {
  var results = arguments.callee.results || null;
  results = document.evaluate(
    exp, context || document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, results);
  var arr = [];
  for (var i = 0, l = results.snapshotLength; i < l; i++) {
    arr[i] = results.snapshotItem(i);
  }
  return arr;
}