Hi! I 've installed jquery plugin instant.js http://www.netzgesta.de/instant/ on my site and it was good!
But.  On my forum with avatars it does not work...
Can you help me and find problem on my page , for example http://rubasket.com/forum/viewtopic.php?f=14&t=767 in avatar place.
probably, it conflicts with other script but i have not experience to solve it....
also i look for  plugin likes this ... 
thanks, Sergei !