Simulate user clicking button programmatically?

Hello,
I have one web page abc.aspx It is possible anyway to simulate button click on xyz.htm from abc.aspx? xyz.htm uses form post method, it has 2 radio buttons and submit and cancel button. now from abc.aspx I can open it in new window, but it is possible to select radio button and submit form programmatically? 
I personally think its totally illogical and maybe hacking. But someone in my team wants to achieve this. Any comments?
 
Regards,
Puneri
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