Tooltips or repeating headers in a table

[eluser]linker3000[/eluser]
Hi,

I am using the Table class to put a reasonably long list (Several hundred rows by 27 columns) on the screen and although I could paginate it, the users have said they would prefer one long view. To help the users work out where they are is it possible to repeat the header row every 'n' lines or add a tooltip to each value, set to show the name of its column header?

Thanks.