}
Button his = new Button("Show History");
his.getStyle().setBgTransparency(100);
his.getStyle().setBorder(Border.createEmpty());
his.addActionListener(new ButtonActionListener());
conversationForm.addComponent(his);
//his.addCommand(Contents.history);
//TODO: se mettessimo un tastino send sotto la textarea?
mainForm.addCommand(Contents.send, 0);