If you are wondering why this page behaves differently when viewed with Firefox 2.0 and Opera 9.2 or with Internet Explorer 7.0, then you might find useful to know that
IE 7.0 will not fire the event until you move the focus to another element (by clicking somewhere else on the page for instance), whereas FF and Opera treat it much like the onClick event.
In order to make the behavior consistent across different browsers, i decided to replace onChange with onClick for checkboxes.
That's why i love sooo much javascript and its different implementations.
I didn't check if, at least, Internet Explorer is consistent across different versions, i'll leave this task as exercise for the student.
;-)
