Hi i really need help...

I used updatepanel to do the login of my page and i have one animation in UpdatePanelAnimationExtender1 with TargetControlID="UpdatePanel1"...

When i click in button1 i do the teste if the login is correct or not, if the login is correct i want  to see the animation, if not i dont want to see...

I need somethig like thist: (I use VB...)

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

 if (login = False) then

    'DISABLE UpdatePanelAnimationExtender1 or stop the resize animation or something that stop this...

End if

End Sub