Accordion(wicket-stuff) and a YU DatePicket together don't work.

[Fernando Wermus]

I have developed some pages using the Nino Saturnino's accordion which is in
wicket-stuff. I got some erros in YU DatePicker when I added it to a
Accordion. The error, a javascript error is the following,

YAHOO.util.Event.purgeElement is not a function
http://..../resources/org.apache.wicket.extensions.yui.YuiLib/calendar/calendar.js
Line 2983

For any ideas, this is my code,
...
            List<WebMarkupContainer> markupItems = new
ArrayList<WebMarkupContainer>();
            markupItems.add(new ResumenPartido(AccordionPanelItem.ITEM_ID,
inscripcion));
            AccordionPanelItem itemResumenDelPartido = new
AccordionPanelItem(    "Resumen del partido " + inscripcion.getNombre(),
markupItems);
...


public class ResumenPartido extends Panel {....
    public ResumenPartido(String id, InscripcionPartido inscripcion) {
...
                 add(crearFecha("cuando", inscripcion));
...
    }
    private DateTextField crearFecha(String id, InscripcionPartido
inscripcion) {
        DateTextField fecha=new DateTextField(id,new
PropertyModel(inscripcion,"cuandoDate"));
        fecha.add(new DatePicker(){
            @Override
            protected boolean enableMonthYearSelection() {
                return true;
            }
        });
        return fecha;
    }
...}


-- 
Fernando Wermus.