[smek]

use html commenting and it works

<!---{if $product.weight ne "0.00" || $variants ne ''}
<tr id="product_weight_box">
<td width="30%">{$lng.lbl_weight}</td>
<td nowrap="nowrap"><span id="product_weight">{$product.weight|formatprice}< /span> {$config.General.weight_symbol}</td>
</tr>
{/if} -->