* use onkeypress event instead of onkeyup for AJAX call, otherwise both AJAX call and form submit will be invoked.
* but still use onkeyup event for non-AJAX field because firefox will sent 'only typed characters' even when a user select an element from the form history.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26787 20353a03-c40f-0410-a6d1-a30d3c3de9de