LayoutManager lo = null;
if (los instanceof String){
if (LAYOUT_CLASSIC.equalsIgnoreCase((String) los))
lo = new ClassicLayoutManager();
else if (LAYOUT_LIST.equalsIgnoreCase((String) los))
lo = new ListLayoutManager();
else {
try {
lo = (LayoutManager) Class.forName((String) los).newInstance();
} catch (Exception e) {
LOG.warn("No valid LayoutManager: " + e.getMessage(),e);