Fixed Column HTML Table

I somehow solved the problem of displaying a wide table on a page with a fixed width. By condition, it was always necessary to show the left column (with row headers). Maybe I searched poorly, but the solution found did not work, because it has many limitations. The result is this .

Principle of work: we make a duplicate table, impose it on top of the original. The original content is hidden, the duplicate has a column with headers. Checked in IE8, FF3, O10 (can be finished for IE6 and 7).

I hope someone comes in handy.