#topblock {
   width: 960px;
   height: 300px;
}

#topblock #topblockcontent {
   /*width: 940px;
   height: 284px;
   */
   width: 960px;
   height: 300px;
   padding:0;
}

#topblock #topblockbg {
   width: 960px;
   height: 300px;
   overflow: hidden;
}