public void refresh(String componentId) {
		FacesContext context = FacesContext.getCurrentInstance();
		UIComponent component = findComponent(context.getViewRoot(),componentId);
		if (component != null)
			clearChilds(component);
	}

	/**
	 * Finds component with the given id
	 */
	private UIComponent findComponent(UIComponent c, String id) {
		if (id.equals(c.getId())) {
			return c;
		}
		Iterator<UIComponent> kids = c.getFacetsAndChildren();
		while (kids.hasNext()) {
			UIComponent found = findComponent(kids.next(), id);
			if (found != null) {
				return found;
			}
		}
		return null;
	}

	private void clearChilds(UIComponent c) {
		if (UIInput.class.isAssignableFrom(c.getClass())) {
			UIInput input = (UIInput)c;
			input.resetValue();
		} else {
			Iterator<UIComponent> kids = c.getFacetsAndChildren();
			while (kids.hasNext()) {
				clearChilds(kids.next());
			}
		}
	}