I hope ill get you right, ...
you want a "Alt-Tag" for the Avatar-Link?
Ok, ...
change:
Code:
<a href="member.php?s=$session[sessionhash]&action=editavatar" target="_blank" class="name" id="name">$post[avatar]</a>
to:
Code:
<a href="member.php?s=$session[sessionhash]&action=editavatar" target="_blank" class="name" id="name" alt="Click on avatar to change it">$post[avatar]</a>