iv>
          <div id="ex3">
            <h4 id="grid3Label">Transactions for January 1 through January 15</h4>
            <button type="button" id="toggle_column_btn" name="toggle_columns">Hide Type and Category</button>
            <table id="ex3-grid" role="grid" aria-labelledby="grid3Label" aria-rowcount="16" aria-colcount="6" data-per-page="5" class="data">
              <tr data-fixed="true">
                <th>Date</th>
                <th>Type</th>
                <th>Description</th>
            