Because browser security there are heavy limitations if you load external content into a window. External content is content who comes from another domain (URL) then the WinLIKE page comes from.

• Links from external contents can not open WinLIKE windows.
• Because the local page can not track changes in the external window, the window title, the Deeplink and the Drag&Save-Link can not be actualized. Also the history buttons and the reload button will not work correctly.
• In NN7 mouse moving over external content will not work.

Note: all the following servernames point to same physical computer, but are recognized by browser as different machines (domains): localhost, myserver, myserver.mydomain.com, 127.0.01, 192.168.1.1

Note: P3P browsers as IE6 block cookies from external sources if you don't allow this:
PHP: header("p3p: CP=\"CAO PSA OUR\"");
ASP: Response.AddHeader "P3P","CP=""CAO PSA OUR"""
Otherwise your session variables won't work because the server doesn't recognize the client.