Display the list of values in check box - Interesting problem

I am using iterator to display list in bean with check boxas below s:iterator value=cableHeadends id=cableHeadendsIter status=rowstatus tr td s:property name=cableName

disable submit button

I would like to know how to disable submit button when using AJAX theme. below is the code I am using s:submit type=submit disabled = true theme=ajax value=Save title=Save all changes. cssClass=mediumBtn