jquery.treegrid.js

<table class="tree">
	<tr class="treegrid-1">
		<td>Root node</td><td>Additional info</td>
	</tr>
	<tr class="treegrid-2 treegrid-parent-1">
		<td>Node 1-1</td><td>Additional info</td>
	</tr>
	<tr class="treegrid-3 treegrid-parent-1">
		<td>Node 1-2</td><td>Additional info</td>
	</tr>
	<tr class="treegrid-4 treegrid-parent-3">
		<td>Node 1-2-1</td><td>Additional info</td>
	</tr>
</table>