Session.get().error(new ParamResourceModel("styleNotFound", this, style.getFilename()).getString());
}
}
// style copy functionality
styles = new DropDownChoice("existingStyles", new Model(), new StylesModel(), new StyleChoiceRenderer());
styles.setOutputMarkupId(true);
styles.add(new AjaxFormComponentUpdatingBehavior("onchange") {
@Override
protected void onUpdate(AjaxRequestTarget target) {