Could someone please explain this a little bit more: " If you want to use form in modal window component make sure that you put the modal window itself in another form (nesting forms is legal in Wicket)"
Does it mean HTML <form><div wicket:id="modalWindow"/></form> and Java ModalWindow mw = new ModalWindow("modalWindow"); mw.setcontent(newPanelWithFormInside); is recomended? Stefan