网站右边调用就显示空白

Question

用的mymps程序 就是下面这段代码 只要加上 {if $announce neq ''} 类似的代码 就显示空白 网站其他地方就没事

<div class="announce_faq">
                {if $announce neq ''}
                <div class="announce">
                    <div class="hd">
                        <div class="span">网站公告</div>
                        <div class="more"><a href="{$about.announce_uri}" target="_blank">更多</a></div>
                    </div>
                    <div class="bd">
                        <ul>
                            {foreach from=$announce item=announce name=announcer}
                            <li><span class="announcetitle"><a href="{$announce.uri}" title="{$announce.title}" target="_blank"><font color="{$announce.titlecolor}">{$announce.title|truncate:26}</font></a></span><span class="announcetime">{$announce.pubdate|date_format:'%m-%d'}</span></a></li>
                            {/foreach}
                        </ul>
                    </div>
                </div>
                <div class="clear"></div>
                {/if}
                {if $faq neq ''}
                <div class="faq">
                    <div class="hd">
                        <div class="span">新手帮助</div>
                        <div class="more"><a href="{$about.faq_uri}" target="_blank">更多</a></div>
                    </div>
                    <div class="bd">
                        <ul>
                            {foreach from=$faq item=faq}
                            <li><a href="{$faq.uri}" target="_blank">{$faq.title|truncate:'30'}</a></li>
                            {/foreach}
                        </ul>
                    </div>
                </div>
                {/if}
            </div>


        </div>