When British sailors are released why not Iranian women?

Mr. Ahmadinejad Now that you have released the British sailors because of Eastern and the approaching birth day of Prophet Mohammad, please release our Iranian sisters from Iranian Evin prison. They havn't done anything wrong . They were exercising their rights .They were only collecting signature on a petition to reduce discrimination against women. They didn't violate any law. End violation against women and release members of the "campaign for one million signature" Ms. Nahid Keshavarz and Ms. Mahbubeh Hosainzadeh.

Link to this news in Farsi:

http://www.roozonline.com/archives/2007/04/003412.php