The inline menu stays inside its parent container.
<div class="easyui-panel" title="Menu" style="width:150px;">
<div class="easyui-menu" data-options="inline:true" style="width:100%">
<div onclick="javascript:alert('new')">New</div>
<div>
<span>Open</span>
<div style="width:150px;">
<div><b>Word</b></div>
<div>Excel</div>
<div>PowerPoint</div>
<div>
<span>M1</span>
<div style="width:120px;">
<div>sub1</div>
<div>sub2</div>
<div>
<span>Sub</span>
<div style="width:80px;">
<div onclick="javascript:alert('sub21')">sub21</div>
<div>sub22</div>
<div>sub23</div>
</div>
</div>
<div>sub3</div>
</div>
</div>
<div>
<span>Window Demos</span>
<div style="width:120px;">
<div data-options="href:'window.html'">Window</div>
<div data-options="href:'dialog.html'">Dialog</div>
<div><a href="http://www.jeasyui.com" target="_blank">EasyUI</a></div>
</div>
</div>
</div>
</div>
<div data-options="iconCls:'icon-save'">Save</div>
<div data-options="iconCls:'icon-print',disabled:true">Print</div>
<div class="menu-sep"></div>
<div>Exit</div>
</div>
</div>