css - Cannot adjust right margin on table cell using jQuery :last -

this strange one. i'm trying replicate :last-child older versions of ie don't support css pseudo class.

if @ following code, background color change works, margin not. div inside cell (.inner) has margin of 3px, margin override isn't happening. know jquery can traverse div because background colour change works. problem ie6 , ie7 only. have suggestion? appreciated.

$j('table tbody tr td .inner:last').css({ 'margin-right':'0px', 'background':'red' }); 

let me know if need provide more info.

:last-child css3 selector, , think want apply td, not .inner div adjust margin of .inner div in last cell of each row:

$('table tbody tr td:last-child .inner')...