BTW - I've been following this thread, and hoping to perform some testing/debugging associated with the particular OS/browser that is exhibiting problems. In the meantime, I think there is a bit of disagreement about which elements implement onchange - The HTML 4.0 specification http://www.w3.org/TR/REC-html40/#minitoc and, specifically, the input element http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.4 indicate that a standards compliant browser implement onchange for input="text" elements. It would appear that this is may not be the case for Firefox 2.0.0.3 on Windows XP (as reported) - although, after re-reading the thread I think that there are two separate things going on - one (mine) is a need to call (if defined) the function attached to the onchange event associated with the text input which is the target of the selectDate widget. The other is a need to be able to programatically generate an onchange event. Related situations but not quite the same. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4049393#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...