.tabtt {background-color:#9fbfff;
         height:80px;
         background-image:url(../images/grade1.gif);
        }

  .tabtt1 {background-color:#d9e7fc;
           height:80px;
           background-image:url(../images/grade1.gif);
        }
  .tabtd {background-color:#d7e7fc;background-image:url(../images/side4.gif) }
  .tabtf {background-color:#bfdfff}
  .tabtg {background-color:#d3eaff}
  .thead {color:white; font-family:tahoma; font-size:27pt}
  .yell {background-color:yellow}