code: function xController(callback) {
    'use strict';
  
    var execute = function execute() {
      callback.call(document.currentScript.parentElement, document.currentScript.parentElement);
    };
  
    // For document.currentScript.parentElement to give us the right element
    // it must be called from within the function.
    execute.call(callback);
  }
docs: Calls a function and gives it an element to act on. 
  [xController description]
  @method xController
  @param  {function} callback - This is the controller function for the x-div
  Component. It will be called with the x-div Element
  as its first argument and as the `this` keyword
  @return {void}