I Can't Find That Mario Game! Pls Help!

Hi guys, I'm looking for a Mario game. It was like 2005-2006 and I think it was a flash game including setup. Anyway, it starts in a cloudy level and in the final level, we fought with Sonic. I guess, the jumping button was shift on keyboard. That's what I can remember. If you notice anything in your mind, please tell me. Thanks.

Sorry for my English.

I think there was a game on Newgrounds like that. I thought it was Mario vs. Sonic but I don't remember exactly.