div con imagen

 <? $url_user=$datos['spa']['subdominio'].".boxnuvo.com";        if($datos['posts']['imagen']!="")        {?>        <div class="img" align="center" style="background: url(/img/images_news/tn_<?php echo $datos['posts']['imagen']; ?>) centerno-repeat">        <a href="/posts/view/<?php echo $datos['posts']['id']?>">        <img src="/img/thumb.png" />        </a>        </div><? }else{?>        <div class="imh" align="center" style="background: url(/path/de/la/imagen) center  no-repeat"><?php }?>