       -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";
        color: white;
        font: 10px arial, san serif;
        text-align: left;
        white-space: nowrap;
        padding: 5px;
        border: 1px solid white;
      }
    </style>

    <content id='content'></content>
  </template>
  <script type='application/dart' src='sp_tooltip.dart'></script>
</polymer-element>
