<html>
<head><style>
   table {
     width: 10px;
   }
   div.scroll { 
     overflow: scroll;
     background: lightgreen;
   }
   div.invis {
     color: white;
   }
</style></head>
<body>
  <table><tr><td>
    <div class="scroll">
      x xx x xx x xx x xx x xx x xx x xx x 
      xxxxxx
    </div>
    <div class="invis">
      xxxxxx
    </div>    
  </td></tr></table>
</body>
</html>