Is there any way that I can remove OSXYosemite 10.10 and go back to Maverick?

[iMore Question]

I made a serious mistake and downloaded Yosemite onto my iMac (20in mid 2007)
Is there any way that I can get rid of Yosemite and go back to Maverick?

 

[HankAZ]

I made a serious mistake and downloaded Yosemite onto my iMac (20in mid 2007)
Is there any way that I can get rid of Yosemite and go back to Maverick?

Here you go:
How to downgrade from Yosemite to Mavericks | iMore

The article talks about going from a Yosemite developer preview, but the steps (and results) are the same.