      bwu-datagrid /deep/ .toggle.expand {
        background: url(../../../packages/bwu_datagrid/asset/images/expand.gif) no-repeat center center;
      }

      bwu-datagrid /deep/ .toggle.collapse {
        background: url(../../../packages/bwu_datagrid/asset/images/collapse.gif) no-repeat center center;
      }

    </style>

    <div style='position:relative'>
      <div style='width:600px;'>
        <bwu-datagrid id='myGrid' style='width:100%;height:500px;'></bwu-datagrid>
      </div>

      <div cla