// A. WORKS!

        var grid2 = new dojox.grid.DataGrid({
            query: {},
            store: new dojox.data.HtmlTableStore({
                tableId: "myData2"
            }),
            autoHeight: true,
            autoWidth: true,
            structure: [
                {field: 'isbn', name: 'ISBN', width: 30},
                {field: 'author', name: 'Author'},
                {field: 'title', name: 'Title'},
            ]
        }, 'myData2');
        grid2.startup();

// B. Doesn't Work

        var grid2 = new dojox.grid.DataGrid({
            query:{},
            store: new dojox.data.HtmlStore({
                dataId: "myData2"
            }),
            structure: [
                {field: 'isbn', name: 'ISBN', width: 30},
                {field: 'author', name: 'Author'},
                {field: 'title', name: 'Title'},
            ]
        }, 'myData2');
        grid2.startup();


// HTML

<table id="myData2" style="width: 400px; height: 200px;">
    <thead>
        <tr>
            <th>isbn</th>
            <th>title</th>
            <th>author</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>
                A9B57C
            </td>
            <td>
                Title of 1
            </td>
            <td>
                Author of 1
            </td>
        </tr>
        <tr>
            <td>
                A9B57F
            </td>
            <td>
                Title of 2
            </td>
            <td>
                Author of 2
            </td>
        </tr>
        <tr>
            <td>
                A9B577
            </td>
            <td>
                Title of 3
            </td>
            <td>
                Author of 3
            </td>
        </tr>
        <tr>
            <td>
                A9B574
            </td>
            <td>
                Title of 4
            </td>
            <td>
                Author of 4
            </td>
        </tr>
        <tr>
            <td>
                A9B5CC
            </td>
            <td>
                Title of 5
            </td>
            <td>
                Author of 5
            </td>
        </tr>
    </tbody>
</table>