Convert a multi-select box to checkboxes

A number of ways to do it, none of them very easy. 

Here are a couple I like: 

http://www.erichynds.com/blog/jquery-ui-multiselect-widget
http://www.ryancramer.com/journal/entries/select_multiple/

Thank you, that's close but is there any way of having the checkboxes not inside a pull down list?

Here's a cached version of Eric Hollebone's code that supposedly did this, but I've never been able to get it to work. Good luck.

https://web.archive.org/web/20130702221522/http://test.hollebone.ca/marketo-form-convert-multi-picklist-to-checkboxes-with-jquery