panes.addOption("resizable", true);
panes.addOption("closable", true);
panes.addOption("slidable", false);
panes.addOption("spacing", 6);
panes.addOption("resizeWithWindow", false);
panes.addOption("resizeWhileDragging", true);
layoutOptions.setPanesOptions(panes);
// north pane
LayoutOptions north = new LayoutOptions();
north.addOption("resizable", false);