Share pages login screen overlays existing Netscape browser

[CR #319819] If you are using Netscape 4.76, have a portal page open in Netscape, and click the share Page link in your e-mail, the Share Page login may overlay the existing active Netscape portal browser.

Workaround: Netscape 4.76 is not supported. Use Netscape 7.0 or 7.0.1.