I am trying to use the popup plug in as a "terms

I am trying to use the popup plug in as a "terms of service" window. To do this I need to completely remove the close window button (X) in the upper left. I also need to know what link I use on my "ACCEPT" button to close the popup. Also when using the javascript to size and center my message, there are no margins. Can you tell me how to apply margins? Thanks