<div id="mm" class="easyui-menu" >
<div id="menudetail">
<span data-options ='iconCls:icon-add'>插入</span><div style='width:150px;height:70%;overflow:auto'>
<div><b>TEST</b></div>
......
<div><b>TEST</b></div>
</div>
A lot of blank when set 'overflow:auto' for div,