(SCRIPT LANGUAGE=VBS)
Sub Timeout()
MsgBox "you timed out"
End Sub

Sub Window_OnLoad()
Window.SetTimeOut("TimeOut", 1000, "VBS")
End Sub
(/SCRIPT)

This should give you a message box 1 second after the page loads. I'm not sure how you would do it Netscape, but this should work in IE.

Dennis