//
// Turns an URL from the [img] tag into an <img> tag or a <a href...> tag
//
function handle_img_tag($url, $is_signature = false)
{
	global $lang_common, $pun_config, $pun_user;

	$img_tag = '<a href="'.$url.'">&lt;'.$lang_common['Image link'].'&gt;</a>';

	if ($is_signature && $pun_user['show_img_sig'] != '0')
		$img_tag = '<img class="sigimage" src="'.$url.'" alt="'.htmlspecialchars($url).'" />';
	else if (!$is_signature && $pun_user['show_img'] != '0')
	{
		$imagehw = @getimagesize($url);
		if ($imagehw)
		{
			$width = $imagehw[0];
			$height = $imagehw[1];
			$img_tag = '<img class="postimg" src="'.$url.'" alt="'.htmlspecialchars($url).'" />';
			if ($width > 550)
			{
				$img_tag = '<a href="'.$url.'" rel="lightbox">'  .  $img_tag  .  '</a>';
			}
		}
		else
		{
			$img_tag = '<strong>error: image ' . $url . ' cannot be loaded.</strong>';
		}
	}


	return $img_tag;
}