How Can I Add Checkbox-Limiting Feature To Existing Form?

Greetings,

I found a great checkbox-limiting feature at

[url]http://www.htmlgoodies.com/tutorials/forms/article.php/3479181[/url]

and would like to incorporate such a feature into an existing form I’m using on my website … and of course have the results (the user-checked boxes) summed into the resulting email.

Trouble is, the feature I found is in javascript, and my current form isn’t.

I’d appreciate any guidance.

To view the source code of the form I’m using now, please go to:

[url]http://www.instantradiospots.com/pages-forms/form-asteroid.htm[/url]

Thanks!

Milehigh

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