Q: My mouse keeps jumping around, i have no control over it!

Reset PRAM.  http://support.apple.com/kb/PH4405

Reset SMC.     http://support.apple.com/kb/HT3964

Choose the method for:

"Resetting SMC on portables with a battery you should not remove on your own".

Check External BlueTooth mouse for failing batteries.

Try the tips suggested in this article from Apple.

http://support.apple.com/kb/TS1449

If this does not help, you have to take the computer to the Apple store to have it checked out.

They may be able to clean, tighten the trackpad if loose and check the battery.

Best.