//Copy url.............................................................
 var copyurl = document.getElementById("page-proxy-stack");
if (copyurl) {
   copyurl.addEventListener("click", function(event){
if (event.button !==2) return;
//отключать реакцию по умолчанию на правую кнопку мыши
            event.preventDefault();
            event.stopPropagation();
   var clipboard = Components.classes["@mozilla.org/widget/clipboardhelper;1"].  getService(Components.interfaces.nsIClipboardHelper);
  //URL, copy to Clipboard 
   clipboard.copyString(getBrowser().currentURI.spec);      
   //page-proxy-stack, background: yellow
   var ppstack = document.getElementById("page-proxy-stack");
   ppstack.setAttribute("style", "background: yellow;");
   setTimeout(function() {ppstack.removeAttribute("style");}, 500);
   }, false)};

// ==UserScript==
// @name Custom Buttons
// @namespace http://www.greasespot.net/
// @include http://custombuttons.mozdev.org/drupal/content/*
// @exclude http://custombuttons.mozdev.org/drupal/content/main-page
// @exclude http://custombuttons.mozdev.org/drupal/content/custom-buttons-documentation
// ==/UserScript==
 
 if(content.document.getElementById("sidebar-left"))
 {
    content.document.getElementById("sidebar-left").style.display = "none";
 }
 

 
var d = content.document;
var s = d.createElement("style");
s.type = "text/css";
s.innerHTML = "#sidebar-left + td { padding-left: 0 }";
var h = d.getElementsByTagName("head")[0];
h.appendChild(s);
 
var p = content.document.getElementsByTagName("pre");
for (var i = 0; i < p.length; i++) {
  p[i].style.overflow = "auto";
  if (p[i].textContent.indexOf("data:image") == -1) {
    p[i].style.whiteSpace = "pre-wrap";
    p[i].style.wordWrap = "break-word";
  }
}
 
/* double click to select all */
 
//var d = document;
//var p = d.getElementsByTagName("pre");
for (var i = 0; i < p.length; i++) {
  p[i].addEventListener("dblclick", function () {
    var s = getSelection();
    var r = d.createRange();
    r.selectNodeContents(this);
    s.removeAllRanges();
    s.addRange(r);
  }, false);
}
 
/* fit to width */
 
function t(f) {
  var a = d.createNodeIterator(d, 1, f, false);
  while (a.nextNode()) {}
}
//var d = document;
t(function (e) {
  var x = e.offsetLeft;
  var l = e.offsetParent;
  while (l != null) {
    x += l.offsetLeft;
    l = l.offsetParent;
  }
  var w = d.documentElement.clientWidth - x;
  var s = e.style;
  if (s.marginLeft) w -= s.marginLeft;
  if (s.marginRight) w -= s.marginRight;
  if (s.paddingLeft) w -= s.paddingLeft;
  if (s.paddingRight) w -= s.paddingRight;
  if (s.borderWidth) w -= s.borderWidth;
  w -= d.defaultView.innerWidth - d.documentElement.offsetWidth;
  if (e.tagName == "IMG") {
    var h = e.clientHeight * w / e.clientWidth;
    s.maxHeight = h;
  }
  s.maxWidth = w + "px";
});

var appcontent = document.getElementById("appcontent");
appcontent.removeEventListener("DOMContentLoaded", Myfunc, true);
appcontent.addEventListener("DOMContentLoaded", Myfunc, true);
 
function Myfunc(){
var clffull=content.document.location.href;
var chkpoint='/';
var arrayOfStrings = clffull.split(chkpoint);
var clf=arrayOfStrings[2];
var site_a="http://www.yandex.ru/";
var site_b="http://www.mail.ru/";
var site_c="http://www.rambler.ru/";
if (clf==site_a|clf==site_b|clf==site_c) //сюда добавляем адреса на каких должно срабатывать 
{
alert("сработало!"); 
//-----сюда нужный код

//----------------------
}

}

var link="data:text/html;base64,PFRFWFRBUkVBPjwvVEVYVEFSRUE+DQo8c3R5bGU+aHRtbCB7YmFja2dyb3VuZC1jb2xvcjpibGFjaztvdmVyZmxvdzpoaWRkZW47fXRleHRhcmVhIHtiYWNrZ3JvdW5kOiMzODM4Mzg7b3ZlcmZsb3cteTphdXRvO3dpZHRoOjEwMCU7aGVpZ2h0OjEwMCU7LW1vei1ib3JkZXItcmFkaXVzOjVweDtib3JkZXI6IDVweCBpbnNldCB3aGl0ZTtjb2xvcjogd2hpdGU7fTwvc3R5bGU+";
gBrowser.selectedTab = gBrowser.addTab(link);