Show/Hide div

Hello,

In a simple HTML page, index.html, I have:
- 3 anchors: A, B and C;
- 3 divs: dA, dB and dC;

Each anchor should load, when clicked, index.html but anchor A should
make dA visible and the other invisible, anchor B should show dB and
hide the others.

How can I do this?

Thanks,
Miguel