JS show/hide excessive table rows

<div class=table>
		<h3>Team Name</h3>
		<table class=sortable>
			<thead>
				<tr>
                <th>Username</th>
                <th>Points</th>
                <th>PPD</th>
                <th>WUs</th>
                </tr>
			</thead>
			<tbody>
				<tr class='poweruser'>
					<td><a href='http://folding.extremeoverclocking.com/user_summary.php?s=&u=601868'>User1i</a></td>
					<td>9,153,939</td>
					<td>30,023</td>
					<td>4,047</td>
				</tr>
				<tr class='poweruser'>
					<td><a href='http://folding.extremeoverclocking.com/user_summary.php?s=&u=610116'>User2</a></td>
					<td>7,121,903</td>
					<td>40,085</td>
					<td>2,648</td>
				</tr>
				<tr class='poweruser'>
					<td><a href='http://folding.extremeoverclocking.com/user_summary.php?s=&u=601886'>User3</a></td>
					<td>6,504,640</td>
					<td>27,920</td>
					<td>3,840</td>
				</tr>
				<tr>
					<td><a href='http://folding.extremeoverclocking.com/user_summary.php?s=&u=601869'>User4</a></td>
					<td>2,027,015</td>
					<td>84</td>
					<td>736</td>
				</tr>
				<tr class='poweruser'>
					<td><a href='http://folding.extremeoverclocking.com/user_summary.php?s=&u=616938'>User5</a></td>
					<td>1,583,252</td>
					<td>14,950</td>
					<td>755</td>
				</tr>
			</tbody>
		</table>
	</div>