easyui 设置一加载，搜索框立即弹出的效果

<div id="searchForm" region="north" title="标的查询" collapsed="false"   //一加载就弹出搜索框   collapsed="true" 默认不弹出
        style="height: 100px;">
        <form id="mysearch" method="post" class="searchForm">
            <ul class="searchUl">
                <li><span class="searchTitle">标的内部代码:</span><span><input
                        id="goodsNo" name="goodsNo" class="easyui-validatebox" value="" /></span></li>
                <li><span>标的名称:</span><span><input id="name" name="name"
                        class="easyui-validatebox" value="" /></span></li>