code: public void setError(String string) {
          Label errorLabel = new Label(string);
          errorLabel.setStyleName(JQM4GWT_ERROR_LABEL_STYLENAME);
          errorLabel.addStyleName(JQM4GWT_GENERAL_ERROR_LABEL_STYLENAME);
          generalErrors.add(errorLabel);
          generalErrors.getElement().scrollIntoView();
      }
docs: Set a general error on the form.