doesn't work with my theme???

hi, I am a novice in wordpress but I find “font-resizer” plugin amazing.
I have tested it with some standard wordpress themes and it’s work fine.
For my blog I have made a theme with Artisteer 3 (a wordpress theme
editor) and now “font-resizer” does not work (wordpress 3.2) ??

In “font-resizer” setting if I use

– Default setting, resize whole content in body tag …
No resizing at all.

– Use div with id innerbody …
No resizing at all.

– Use your own div id (with blank field)
Resizing work with fireofx (but initial font size isn’t the standard
size, is a bit bigger, and all is a bit crappy) but doesn’t work with interner explorer 8 (if I click on any A, the char A is added to google toolbar search box (???) )

— Use you own element (For example:…)
No resizing at all.

Is a theme problem? Any idea?

My blog is
https://revisionando.altervista.org/

and the used setting is “Use your own div id (with blank field)” and
works with fireofx (but initial font size isn’t the standard
size, is a bit bigger) but doesn’t work with interner explorer 8.
is there any alternative? I have tested wp-chgfontsize and others but nobody work with workpress 3.2 ??
thank you and sorry for my poor englis. regards from italy ??