public BodyFrame()
{
// create a new page instance, passing this 'master page' as an argument
LeftFrame leftFrame = new LeftFrame(this);
// get the url to that page
IRequestHandler leftFrameHandler = new RenderPageRequestHandler(new PageProvider(leftFrame));
// and create a simple component that modifies it's src attribute to
// hold the url to that frame
ExampleFrame leftFrameTag = new ExampleFrame("leftFrame", leftFrameHandler);
add(leftFrameTag);