PHP behaves weird, mixing up HTML markup - php

Question

Thanks for looking on this problem.
I have a page that is totally valid page, and there is a PHP loop that brings in a <li> for each entry of the table.
When i check this page locally it looks 100% OK, but when veiwing the page online the left side bar (which creates this markup is broken randomly mixing <div>'s and <li>'s and i have no clue what the problem is.
This problem is on FF mac and PC (safari looks good)
See page (problem is on the left side)
php code
<?php do { ?>
<li class="clear-block" id="<?php echo $row_Recordset1['penSKU']; ?>">
<a title="Click to view the <?php echo $row_Recordset1['penName']; ?> collection" rel="<?php echo $row_Recordset1['penSKU']; ?>">
<img src="prodImages/small/<?php echo $row_Recordset1['penSKU']; ?>.png" alt="" />
<div class="prodInfoCntnr">
<div class="basicInfo">
<span class="prodName"><?php echo $row_Recordset1['penName']; ?></span>
<span class="prodSku"><?php echo $row_Recordset1['penSKU']; ?></span>
</div>
<div class="secondaryInfo">
<span>As low as .<?php echo $row_Recordset1['price25000']; ?>¢ <!--<em>(R)</em>--></span>
<div class="colorPlacholder" rel="<?php echo $row_Recordset1['penColors']; ?>"></div>
</div>
</div>
<div class="additPenInfo">
<div class="imprintInfo"><span>Imprint area: </span><?php echo $row_Recordset1['imprintArea']; ?></div>
<div class="colorInfo"><span>Available in: </span><?php echo $row_Recordset1['penColors']; ?></div>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<th>Amount</th>
<th>500</th>
<th>1,000</th>
<th>2,500</th>
<th>5,000</th>
<th>10,000</th>
<th>20,000</th>
</tr>
<tr>
<td>Price <span>(R)</span></td>
<td><?php echo $row_Recordset1['price500'];?>¢</td>
<td><?php echo $row_Recordset1['price1000'];?>¢</td>
<td><?php echo $row_Recordset1['price2500'];?>¢</td>
<td><?php echo $row_Recordset1['price5000'];?>¢</td>
<td>Please Contact</td>
<td>Please Contact</td>
</tr>
</table>
</div>
</a>
</li>
<?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>

Answer 1

You cannot put a <div> inside of <a>.
Divs are block level elements. Anchors are not. Basically, it's like putting <span> outside of <div>. Doesn't make any sense.
Solution: Move the anchors to inside the divs.
(In the future, if different browsers are displaying it differently, it's probably not the PHP but the HTML.)