if (typeof jQuery === "undefined") {
  loadjQuery("//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js", verifyJQueryCdnLoaded);
} else 
  main();

var verifyJQueryCdnLoaded = function() {
  if (typeof jQuery === "undefined")
    loadjQuery("//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js", main);
  else
    main();
}

var loadjQuery = function(url, callback) {
  var script_tag = document.createElement('script');
  script_tag.setAttribute("src", url)
  script_tag.onload = callback; // Run callback once jQuery has loaded
  script_tag.onreadystatechange = function () { // Same thing but for IE
    if (this.readyState == 'complete' || this.readyState == 'loaded') callback();
  }
  script_tag.onerror = function() {
    loadjQuery("//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js", main);
  }
  document.getElementsByTagName("head")[0].appendChild(script_tag);
}

function main() {

}