code: public void unhide(Object group) {
  		if (isAttached()) {
  			Element element = helper.getGroup(group);
  			if (element != null) {
  				Dom.setElementAttribute(element, "display", "inline");
  			}
  		}
  	}
docs: Show the specified group. If the group does not exist, nothing will happen.
  
  @param group
  The group object.