In your CSS file template_css, you will find :
If you modify the width from 62px to 100px, you can now see the text until the end...
But you still have a problem with your background image which is not big enough.
And in the file class1.css, you will find the background :
But I think you simply want to change the class extension you added to the Acajoom module (which is actually -hilite7 ) and specify an other one to be able to set your own CSS... So maybe simply edit your Acajoom Module and instead of -hilite7, specify -hilite20 (or anything else) and do your own CSS...