datagrid显示异常，当记录少于18条就显示不出来！ - jQuery MiniUI

<div id="datagrid1" class="mini-datagrid" style="width:100%;height:80%;" allowAlternating="true" allowCellWrap="true" allowResize="true"
url="<%=request.getContextPath()%>/onlineDucha/aboutSelect.do?select=select_loadTask_SendTongzhi_ResultJson&styleName=${styleName}&styleGUID=${styleGUID}" idField="TASK_GUID" multiSelect="true" showFooter="true" >
<div property="columns">
<div type="checkcolumn" ></div>
<div field="TASK_XSTYLE" width="7%" headerAlign="center" allowSort="true" allowCellWrap="true">工作类别</div>
<div field="TASK_CONTENT" width="20%" headerAlign="center" allowSort="true">具体任务</div>
<div header="进度安排" headerAlign="center">
<div property="columns">
<div field="TASK_JINDUANPAI" width="9%" headerAlign="center">第一季度</div>
<div field="TASK_JINDUANPAI2" width="9%" headerAlign="center">第二季度</div>
<div field="TASK_JINDUANPAI3" width="9%" headerAlign="center">第三季度</div>
<div field="TASK_JINDUANPAI4" width="9%" headerAlign="center">第四季度</div>
</div>
</div>
<div field="TASK_FENGUANLEAD" width="7%" headerAlign="center" align="center" allowSort="true" >分管领导</div>
<div field="TASK_ZHUBAN_UNIT" width="15%" headerAlign="center" allowSort="true" allowCellWrap="true">牵头单位</div>
<div field="TASK_XIEBAN_UNIT" width="15%" headerAlign="center" allowSort="true" >协办单位</div>
</div>
</div>

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2013-02-21 12:28:53,388 INFO (AboutSelectAction.java:117) - [{"TASK_NOTE":null,"TASK_REQUIREMENT":null,"TASK_JINDUANPAI":"ce","TASK_NIDING_TIME":null,"TASK_GUID":"{0A01256A-FFFF-FFFF-FB01-A19F0000011F}","TASK_CONTENT":"ces","TASK_NIDING_ADDRESS":null,"TASK_XIEBAN_UNIT":"","TASK_JINDUANPAI4":"ces","TASK_FENGUANLEAD":"鲁毅、黄盛华","TASK_JINDUANPAI3":"ces","TASK_JINDUANPAI2":"ces","TASK_ZHUBAN_UNIT":"发展和改革局","TASK_BIANHAO":"MS0-2013-330","TASK_NAME":null,"TASK_SCHEDULE":null,"TASK_XSTYLE":null}]

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