tangor - 9:39 am on Oct 15, 2011 (gmt 0)
Not going to deal with image (word) navigation. Merely asking why image instead of the word... which is better for both user (accessibility) and search engines. Might want to do a rethink in that regard (and solve a LOT of problems all at once).
Note: this is not a solution, it is an observation regarding general use and works cross-browser (all of them).
And, before I forget! Welcome to Webmasterworld! Remember me as the crotchety old curmudgeon.