<table>
  <thead>
    <tr>
      <th>#</th>
      <th>First Name</th>
      <th>Last Name</th>
      <th>Username</th>
    </tr>
  </thead>
  <tbody>
    ...
  </tbody>
</table>

<script>
  $(function(){
    $("table").resizableColumns();
  });
</script>

<script src="libs/jquery.js"></script>
<script src="libs/store.js"></script>
<script src="jquery.resizableColumns.js"></script>

<table data-resizable-columns-id="demo-table">
  <thead>
    <tr>
      <th data-resizable-column-id="#">#</th>
      <th data-resizable-column-id="first_name">First Name</th>
      <th data-resizable-column-id="last_name">Last Name</th>
      <th data-resizable-column-id="username">Username</th>
    </tr>
  </thead>
  <tbody>
    ...
  </tbody>
</table>

<script>
  $(function(){
    $("table").resizableColumns({
      store: store
    });
  });
</script>