phpcms 每组循环调2个, 每组2个调用

<ul>
                                {pc:content action="lists" catid="7" num="12" order="listorder ASC" moreinfo="1"}
　　                                {loop $data $r}
                                {if $n%2=="0"}
                                <li>
                                    <div class="home-top-txt"><a href="{$r[url]}">
                                        <div class="home-top-title">
                                            <h3>{str_cut($r['title'],36)}</h3>
                                            <span>点击更多</span>
                                        </div>
                                        <img src="{thumb($r['thumb'],298,278)}" alt="{$r['title']}">
                                    </a></div>
                                </li>
                                {else}
                                <li>
                                    <div class="home-top-txt"><a href="{$r[url]}">
                                        <img src="{thumb($r['thumb'],298,278)}" alt="{$r['title']}">
                                        <div class="home-top-title1">
                                            <h3>{str_cut($r['title'],36)}</h3>
                                            <span>点击更多</span>
                                        </div>
                                    </a></div>
                                </li>
                                {/if}
                                {/loop}
                                {/pc}
                            </ul>