Worker

void addEventListener(
    in DOMString type, 
    in EventListener listener, 
    in boolean useCapture); 

boolean dispatchEvent(
    in Event evt) raises(EventException); 

void postMessage(
    in DOMString message); 

void removeEventListener(
    in DOMString type, 
    in EventListener listener, 
    in boolean useCapture); 

void terminate(); 

attribute EventListener onerror; 

attribute EventListener onmessage;