jquery append button formatting issue

jquery append button formatting issue

hello,
i have a issue with the jquery button.
i parse a xml to iport a list "li" with jquery..

  1.             for(i; i < count; i++)
                {
                      ....               
                   $('#veranstaltungenrss').append('<li><a href="'+link+'">'+filterDate+' | '+title+' | '+filterTime+'</a></li>');
                }
               
                $('#veranstaltungenrss').append('<a href="#" data-role="button" data-icon="refresh" class="load-more">Weitere laden...</a>');
                $('#veranstaltungenrss').listview('refresh');








all works but if i add a button after the list "in js" to load more content for the list the button has no formating..
a refesh the listview but it not works..

i search but not found a answer

*sry for my bad english