Navigation fails in IE for flex

In my application, when I have got an modal window with tab navigation enabled for all the fields. When I am working with chrome, the navigation works fine but when i try it in IE, when i press on tab from the last field, instead o开发者_如何转开发f going to the first field, the control goes to the address bar. Does anyone know how to rectify this issue? Is it possible to set next-navigable-item on items?

Look into tabIndex.