Image as Anchor for Link Question

[azn_romeo_4u]

My site allows placing myspace cursors on your page by placing a code on your page right? Now I got a question about using an image as an achor.

<style type="text/css">body, a, a:hover {cursor: url(http://cur.cursors-4u.net/games/gam-10/gam937.ani), progress;}</style><a href="http://www.cursors-4u.com/cursor/2009/04/03/triforce-the-legend-of-zelda.html" target="_blank" title="Triforce The Legend Of Zelda"><img src="http://cursors-4u.com/support.gif" border="0" alt="Triforce The Legend Of Zelda" style="position:absolute; top: 0px; right: 0px;" /></a>

Above is an example code that I recently changed. I'm curious about the image http://cursors-4u.com/support.gif It's just a block image that does not related to "Triforce The Legend Of Zelda"

What am I asking is, since the image is used as an anchor, and it doesn't related to the "Trifoce The Legend Of Zelda" is that wrong for seo? Even though I have the link that points to "Trifoce The Legend Of Zelda" but the image is not related to the link other than a way to advertise my site when someone uses the code? Should I keep the alt as "Trifoce The Legend Of Zelda" or change it to something that's related to the image? Or should it be related to the link?