<a id="menuOption" href="javascript:void(0)" data-toggle="topjui-menubutton" data-options="iconCls: 'fa fa-wrench',disabled:true,
btnCls: 'topjui-btn-green',hasDownArrow: true,menu:'#optionSubMenu-toolbar'">操作</a>
<div id="optionSubMenu-toolbar">
<div id="optMenuUnApprove" data-options="iconCls:'fa fa-mail-reply',disabled:true,onClick:menuUnApproveClick">返审核</div>
<div id="optMenuUnSubmit" data-options="iconCls:'fa fa-share-square-o',disabled:true,onClick:menuUnSubmitClick">返提交</div>
</div>
默认返审核、反提交按钮是禁用的，我想问一下怎么用js控制这二个按钮启用呢