$get(id, element);
   Provides a shortcut to the getElementById method of the Sys.UI.DomElement class.
   element - (Optional) The parent element to search.
                        The default is the document element.                      
                          
$find(id, element);
   id - a string that contains the ID of the element to find
   element - (Optional) The parent element to search.
                        The default is the document element.

$addHandler(element, eventName, handler);       
   Provides a shortcut to the addHandler method of the Sys.UI.DomEvent class.        

$addHandlers(element, events, handlerOwner);
   handlerOwner - (Optional) The object instance that is the context for the delegates
                             that should be created from the handlers.
   (ex) $addHandlers($get("Button1"),
                      {click:processEventInfo,
                       mouseover:processEventInfo,
                       mouseout:processEventInfo});

$removeHandler(element, eventName, handler);
   Provides a shortcut to the removeHandler method of the Sys.UI.DomEvent class.

$clearHandlers(element);
   Provides a shortcut to the clearHandlers method of the Sys.UI.DomEvent class.
  
  

c.get_events();
   Gets an EventHandlerList object that contains references to all the event handlers that are mapped to the current component's events.

var _id = aComponent.get_id();
c.set_id(value);
   Gets or sets the ID of the current Component object.

var bool = aComponent.get_isInitialized();
   Gets a value indicating whether the current Component object is initialized.

var bool = aComponent.get_isUpdating();
   Gets a value indicating whether the current Component object is updating.

[Sys.Component]

$create(type, properties, events, references, element);
   Creates and initializes a component of the specified type.
   type - The type of the component to create.
   properties - (Optional) A JSON object that describes the properties and their values.
   events - (Optional) A JSON object that describes the events and their handlers.
   references - (Optional) A JSON object that describes the properties that are references to other components.
   element - (Optional) The DOM element that the component should be attached to.

   (ex) $create(MyControl, {id: 'c1', visible: true}, {click: showValue}, null, $get('button1'));
 

aComponent.raisePropertyChanged(propertyName);
   propertyName - The name of the property that changed.
   Raises the propertyChanged event for the specified property. 

aComponent.initialize();
   Initializes the current Component object.

aComponent.updated();
   Called by the endUpdate method as a placeholder for additional logic in derived classes.

aComponent.beginUpdate();
   Called by the create method to indicate that the process of setting properties of a component instance has begun.
  
aComponent.endUpdate();
   Called by the create method to indicate that the process of setting properties of a component instance has finished.

aComponent.dispose();
  Removes the component from the application.