li.Prog {
    height: 160px;
    float: left;
    padding:2px;
    text-indent: -99999px;
    width: 160px;
}


ul.Prog {
    /*background: #f4f4f4;
    background: linear-gradient(#fff, #eee);
    border: 1px solid #ccc;
    border-radius: 6px;
    display: inline-block;
    height: 36px;
    list-style: none;
    margin: 0 0 20px 0;
    padding: 0 4px 0 0;*/
    direction: ltr;
    height: auto;
    display: inline-block;
    list-style: none; /*margin: 0 0 -15px 33px;*/
    padding: 0 4px 0 0;
}

         li a.Prog {
               background: url('../../images/pictoPro.png') 0 0 no-repeat;
                 display: block;
                  height: 160px;
                   width: 160px;

         }

         
         
         .Net a.Prog {
                background-position: 0 0;
                

         }

          .Net a.Prog:hover {
                 background-position: 0 -160px;

         }

         .Unlimit a.Prog {
                background-position: -180px 0;

         }

          .Unlimit a.Prog:hover {
                 background-position: -180px -160px;

         }

           .Pro a.Prog{
            background-position: -360px 0;
        }
          
        .Pro a.Prog:hover  {
            background-position: -360px -160px;
        }

           .Light a.Prog{
            background-position: -540px 0;
        }
          
        .Light  a.Prog:hover  {
            background-position: -540px -160px;
        }