Hide all gumtree adds that are all caps

gumtree_shout_ban.js

// ==UserScript==
// @name          Gumtree Shout Ban
// @namespace     GumtreeShoutBan
// @description   Hide all gumtree adds that are all caps
// @include       http://www.gumtree.com/*
// ==/UserScript==
// a function that loads jQuery and calls a callback function when jQuery has finished loading
function addJQuery(callback) {
  var script = document.createElement("script");
  script.setAttribute("src", "http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
  script.addEventListener('load', function() {
    var script = document.createElement("script");
    script.textContent = "(" + callback.toString() + ")();";
    document.body.appendChild(script);
  }, false);
  document.body.appendChild(script);
}

// the guts of this userscript
function main() {
  $.each($('.ad-title-text'), function() {if(!$(this).html().match(/[a-z]/)) {$(this).parents('.hlisting').hide()}})
}

// load jQuery and execute the main function
addJQuery(main);