Cursor Blinking Leaving Artifacts / Ghosts in NS7.1 -- Can it be resolved?

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I've got a page built in DHTML, and when someone tabs between form
elements on the page it leaves ghost trails of the blinking cursor
behind on the form box anytime the cursor blinks to the visible state.
 It doesn't do this in IE.  Has anyone heard of this and is there
anyway to fix this problem with a snippet of JavaScript or some other

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