How can I implement minimap function in the BrCtlSampleApp

I'd like to implement a minimap container above the brower view.

In these days, OSS browser have this kind of minimap.

I installed S60 3rd edition SDK and modified code from BrCtlSampleApp sample code.

So I'd like to know how can I

- get browser snapshot of displaying webpage (CBrCtlSampleAppContainer's view)
basically I can copy of screen, but browser is displayed a part of full page, screen copy is
not enough for minimap.

- know current position of web page
I'd like to display in the minimap for user's view partition .

Thanks in advanced.

I'm novice in the S60