You can do it via XHTML: <option value="B" selected="selected">B</option>
or add the attribute with jQuery: $('#first option:eq(2)').attr('selected','selected'); ricardo On Sep 17, 10:50 am, kevin <[EMAIL PROTECTED]> wrote: > Hi all, > > here is my sample page http://sskes.damimi.org/test/ > > my question is how can i let the first box selected on "B" and also > trigger second box list the correct value > "B1","B2","B3,"B4" automatically when page loaded. > > thanks.