Create visited link on a graphic

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From: Wylie C (WylieC_at_discussions.microsoft.com)
Date: 09/25/04 

Date: Sat, 25 Sep 2004 15:35:02 -0700

I have a mouseover event that works on a graphic hyperlink. How can I keep
the second picture to remain the active picture after it has been used so it
works like a visited hyperlink until the user exits the web site?

Thank you.