CLONE -Error icon displayed behind popup

[openfaces]

Anna Maria I have a popup layer with an input text in it. In order to display validation messages related to the input text I use a floatingIconMessage. The problem is that in case of error the error message is displayed ok but the error icon is hidden behind the popup. I tried to set the z-index style property of the floating icon but it seems that it is ignored. What should I do to get the icon displayed properly?