This code is really for people who are using the Sportsline website for their fantasy baseball league and perhaps any of their Sportsline fantasy teams. While this code does clean up some of Sportsline's main web page it does a much better job on their fantasy baseball page. The code itself removes the "ads by google", the partner links (top of page), the Sportsline ad, the video player, and most of the video section. It also removes an ad above the Live Scoring page. credit Weishun & Rob
This needs a url reference, like
@namespace url(http://www.w3.org/1999/xhtml);
@-moz-document domain("www.sportsline.com") {
----- Code here -----
}