Button btnRefresh = new Button();
btnRefresh.setId("btnSelectYoutubeSong");
btnRefresh.setSclass("oT_ButtonForPanelWithIcon");
btnRefresh.setImage("/images/icons/play-music_16x16.png");
btnRefresh.setTooltiptext(Labels.getLabel("btnSelectYoutubeSong.tooltiptext"));
btnRefresh.addEventListener("onClick", new BtnClickListener());
btnRefresh.setParent(hboxSameButtonsHeight);
// body
Borderlayout bl = new Borderlayout();
bl.setHeight(getModulHeight() + "px");