Table header (Print message)

Hi,

1) Can anyone please guide us as to how to format (font and size) of print header?
TableToolsInit.sPrintMessage= "This is table Header";

2) If we have 2 data tables in a page, how can we print different message for each of them?

3) We are on DT version 1.7 and we would like to add PDF button to the table, but when we add that, it does not show the PDF button. Does this version have PDF button support?

Thank you.