Double Submission into DB if Hit Refresh

[Craig Hoffman <choffman@xxxxxxxxxxx>]

What is the best way to avoid data being resubmitted (entered twice) to 
DB (mysql) if the user hits refresh after POSTING data via a form?
__________________________________
Craig Hoffman - eClimb Media

v: (847) 644 - 8914
f: (847) 866 - 1946
e: choffman@xxxxxxxxxx
w: www.eclimb.net
_________________________________

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