code: public void unhide(Object group, String name) {
  		if (isAttached()) {
  			Element element = helper.getElement(group, name);
  			if (element != null) {
  				Dom.setStyleAttribute(element, "visibility", "inherit");
  			}
  		}
  	}
docs: Show the specified element in the specified group. If the element does not exist, nothing will happen.
  
  @param group
  The group object.
  @param name
  The element name.