Image (php looping) - need help

[Iskib]

What I am trying to do is pull images/names then put them in a table. I have done this. Now I want it to loop the table 4 times across then drop down

<tr></tr>

????

With the code I have so far it does 4 then drops the maining down and does not cont to do 4 then drop down until none are left.

Here is the code can anyone help this noob php learner see the prob ?

<?php
	        $n = count($contactlist);
	        for ($i=0; $i<$n; $i++) {
		$contact = $contactlist[$i];
	 	$name = $contact->name;
	 	$imgurl = $contact->imgurl;
	 	$uid = $contact->uid;
 
if ($i == 4) {echo '</tr><tr>';}{
            
	 	
?>
          <td>
          <table border="0">
          <tr>
          <td align="center" class="picture_border">
          <img src="<?php echo htmlentities($imgurl) ?>" /></a></td>
          </tr>
          <tr>
          <td align="center" background="themes/default/images/gradients/003.gif">
          <table width="100%" border="0" cellpadding="4" cellspacing="2" class="text_7_css">
          <tr>
          <td><input type="checkbox" name="uids[]" value="<?php echo $i ?>"/></td>
          </tr>
          <tr>
          <td><?php echo  htmlentities($name, ENT_COMPAT,'UTF-8') ?></td>
          </tr>
          </table>
          </td>
          </tr>
          </table>
          </td>
          
          <?php
          
          	}}
?>

Btw this is not a vbulletin script it does to something else. I have been driving myself crazy on why this won't work lol.