if you want to delve into a bit of javascript you can try this...
when you click a link or hotspot, the object you clicked is given 'focus'. this is what gives it the outline. if you put the following javascript inside your link, it will hopefully get rid of the problem...
onClick="blur()"
(blur is the javascript opposite of focus)
this should appear in your code like this...
href="[the page you want to link to]" onClick="blur()"
i haven't had a chance to try this, but i think it should work.
hope this helps,
ss