This is CSS file so you should use
/*BACKGROUND-IMAGE: URL(../../images/tab_bg2.gif);*/
instead of
{*BACKGROUND-IMAGE: URL(../../images/tab_bg2.gif);*}
to comment the line.
All browsers skip the invalid css lines but IE6 possibly skips the next rule after this one also.
To check this you can change your CSS to
Code:
{*BACKGROUND-IMAGE: URL(../../images/tab_bg2.gif);*}
TEXT-COLOR: #fefefe;
BACKGROUND-COLOR: #000000;
FONT-WEIGHT: bold;
FONT-SIZE: 11px;
TEXT-ALIGN: center;
I suppose you will get right background color but font-color won't be applied.
PS AFAIK there is no valid property TEXT-COLOR. The right variant is COLOR