<script type="text/javascript">
function apply()
{
	document.check_dis.delete.disabled=true;
  if(document.check_dis.checkbox.checked==false)
  {
    document.check_dis.delete.enabled=false;
  }
  if(document.check_dis.checkbox.checked==true)
  {
    document.check_dis.delete.disabled=false;
  }
 }
</script> 

<form name="check_dis" action="index.php" method="post">
<table>
<tr>
<td> <input name="checkbox[]" type="checkbox" id="checkbox[]" value="{$n.photos_id}" onClick="apply()">
</td>
....
</tr>
</table>
<input name="delete" type="submit" id="delete" value="Delete" >

</form>

<td> <input name="checkbox[]" type="checkbox" id="checkbox[]" value="{$n.photos_id}" onClick="apply()">
</td>

<input name="delete" type="submit" id="delete" value="Delete" >

</script>

<!--Делаем активной submin delete только если выбран чекбокс-->
<script type='text/javascript'>

function apply(obj)
{

var one_enabled = false;	
c = document.getElementsByTagName('input');
  for (var i = 1; i < c.length; i++)
  {
    if (c[i].type == 'checkbox')
    {
      if (c[i].checked)
	  {
		  one_enabled = true;
	  }
    }
  }	
	
	
  if(!one_enabled)
  {
   
	document.check.delete.disabled=true;
	  
  }
  else 
  {
	
    document.check.delete.disabled=false;
  }

 
 
}


</script>

{foreach from=$photos item=n }
<tr>
	<td> <input name="checkbox[]" type="checkbox" id="checkbox[]" value="{$n.photos_id}" onClick="apply()"></td>
	<td> {$n.photos_id}  </td>  
    <td> {$n.photos_name}  </td>  
	<td> {$n.photos_size}</td> 
	<td> {$n.photos_comment}</td>
	<td> {$n.album_id} </td>
	<td> {$n.user_id} </td>	
	<td>
	<img src="{$n.photo}" alt="" width="50" height="50"><br>
	</td>
	<td> {$n.post_date} </td>
</tr>



{/foreach}

</table>

<input name="delete" type="submit" id="delete" value="Delete">

</form>
<a href='upload.php'>New note</a><br/>