code: function( ref )
  		{
  			var fn = functions[ ref ];
  			return fn && fn.apply( window, Array.prototype.slice.call( arguments, 1 ) );
  		}
docs: Executes a function based on the reference created with
  CKEDITOR.tools.addFunction.
  @param {Number} ref The function reference created with
  CKEDITOR.tools.addFunction.
  @param {[Any,[Any,...]} params Any number of parameters to be passed
  to the executed function.
  @returns {Any} The return value of the function.
  @example
  var ref = CKEDITOR.tools.addFunction(
  function()
  {
  alert( 'Hello!');
  });
  <b>CKEDITOR.tools.callFunction( ref )</b>;  // Hello!