E.R.

>When you add a Master Page to UserLogin.aspx the javascript created by setting this.FocusedControl doesn't work. Is that because the control is now in a ContentPlaceholder? Is there a way to get this to work correctly?

Try using one of these approaches as discussed in the MM .NET Dev Guide topic "Setting Initial Control Focus on a Web Form":

this.SetFocus(this.Button1)

this.Button1.Focus()

Best Regards,