Overlib is another nice Mouse over script guys its freeware (free wot ever it is) i just used the code ... and tested and its works and getting error so i asked geek more info goes here.
include the js in the headinclude and put the div in the header template and thats it
http://www.bosrup.com/web/overlib/
i really love this mouse over its KEWL
try geek to integrate properly i thinks it GPL so shud not be probz