How to choose more than one option from a select box

Answer 1

I've had this same problem, and the guys at htmlforums managed to come up with a way.

Heres the forum link:

http://www.htmlforums.com/client-side-scripting/t-select-multiple-items-without-ctrl-117760.html

And heres the answer: (i havn't had time to adapt it to your code, sorry)