th now uses display:none instead of visibility:hidden to fix wierd ie7 problem
th now uses display:none instead of visibility:hidden to fix wierd ie7 problem

jmosbech/StickyTableHeaders,MSWTLM/StickyTableHeaders,teej-minted/StickyTableHeaders,ITtenax/StickyTableHeaders,zheryu/StickyTableHeaders,teej-minted/StickyTableHeaders,MSWTLM/StickyTableHeaders,ITtenax/StickyTableHeaders,mamigot/StickyTableHeaders,zheryu/StickyTableHeaders,mamigot/StickyTableHeaders