text: function get_defined_functions () {
    // From: http://phpjs.org/functions
    // +   original by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: Test case 1: If get_defined_functions can find itself in the defined functions, it worked :)
    // *     example 1: function test_in_array (array, p_val) {for(var i = 0, l = array.length; i < l; i++) {if(array[i] == p_val) return true;} return false;}
    // *     example 1: funcs = get_defined_functions();
    // *     example 1: found = test_in_array(funcs, 'get_defined_functions');
    // *     results 1: found == true
    var i = '',
      arr = [],
      already = {};
  
    for (i in this.window) {
      try {
        if (typeof this.window[i] === 'function') {
          if (!already[i]) {
            already[i] = 1;
            arr.push(i);
          }
        } else if (typeof this.window[i] === 'object') {
          for (var j in this.window[i]) {
            if (typeof this.window[j] === 'function' && this.window[j] && !already[j]) {
              already[j] = 1;
              arr.push(j);
            }
          }
        }
      } catch (e) {
        // Some objects in Firefox throw exceptions when their properties are accessed (e.g., sessionStorage)
      }
    }
  
    return arr;
  }
  