0.6
- fixed a problem when the text is not shown when using groups (#17)
- change event is now rises when the checkbox is clicked, the previous version only rised the event on label click (#18)
- blur and focus events are rised when the ddl is shown/hidden (#19)
- fixed a small issue with "float" keyword not correctly used from js (#20)
- fixed the firstItemChecksAll incorect behavior when using groups (#23)

0.5
- fixed destroy function to allow dynamic updates scenarios (#7)
- moved text height to css to fix the problem of zero text height when the control is initially hidden (#8)
- fixed hover over items in firefox (#11)
- fire onchange event on the source select when the chackboxes are checked (#12)
- fixed control text when using select groups (#14)
- other minor fixes

0.4
- added support for groups. The optgroup tags are visible in the drop down and have their own style. The options are indented if they are in a group (#5)
- fixed a css issue with text remaining gray on hover

0.3
- fixed a problem where checkboxes are not checked when options are initially selected in IE6 (#3)

0.2
- works in Chrome and Opera

0.1
- initial version