#pic a {
 background: url('../buttons/b.gif') no-repeat;
 width: 136px; height:78px;

 display: block
}
#pic a:hover {
 width: 136px; height: 78px;
 background: url('../buttons/bt1w.gif') no-repeat;

}


#pic1 a{
   display:block;
   background:url('../buttons/bt2.gif') no-repeat;
   width:137px;height:80px;

 }
#pic1 a:hover {background: url('../buttons/bt2w.gif') no-repeat;
 width:137px;
   height:80px;
}

#pic2 a{
   display:block;
   background:url('../buttons/bt3.gif') no-repeat;
   width:137px;
   height:87px
    }

#pic2 a:hover {background: url('../buttons/bt3w.gif') no-repeat; width:137px;
   height:87px; }

#pic3 a {
   display:block;
   background:url('../buttons/bt4.gif') no-repeat;
   width:136px;
   height:86px; }

#pic3 a:hover {background: url('../buttons/bt4w.gif') no-repeat;
 width:136px;
  height:86px;
}