4
you could add the script as a smarty tag to the modules you want to use it in, and call it in the theme.html tag only if the module has that tag, like <body <{if $modscript !=""}><{$modscript}><{/if}>>
You'll have to look in your modules to see how ou can assign things to smartytags tho. That's the only way I know of to make it module specific.
Herko