Currently XOOPS voting module allows us to make multiple selection of all options with checkboxes.

I would like to see if there is a way for a user to select only 2 of the options.

I want users to vote for the best 2 only. And their choice should be limited to 2 choices as well.

Is there a simple way to get around with this? A smal hack.
If someone can tell (html / + java) me how to disable checkboxes, once 2 of them are selected I think i can do it by myself.