织梦按栏目id读取banner图

<div class="pic">
<div class="banner">
{dede:type}
<div><a href="[field:description/]"><img src="[field:global.cfg_templets_skin/]/images/[field:id/].jpg" width="100%" height="455" /></a></div>
{/dede:type}
</div>
</div>