获得easyUi dialog 对话框title的属性值

 <div id="dlg" class="easyui-dialog" title="Toolbar and Buttons" style="width:1040px;height:600px;padding:10px"
             data-options="

                 buttons: [{
                     text:'保存',
                     iconCls:'icon-ok',
                     handler:function(){
                         ChangeMessage();
                     }
                 },{
                     text:'关闭',
                     handler:function(){
                         alert('cancel');;
                     }
                 }]
             ">

         <table id="detail_table" iconCls="icon-save" title="My Window" style="width: 100%; height: 300; font-size: 14px;" class="table">
     <tr>
         <td align="right">编号</td>
         <td align="left"><input id="MessageId" class="combo datebox" style="width:180px; height: 20px;" readonly="true"></td>
         <td align="right">菜单名称</td>
         <td align="left"><input id="MessageTitle" class="combo datebox" style="width:180px; height: 20px;"></td>
         <td align="right">数据类型</td>
         <td align="left">
             <select id="MessageType" class="easyui-combobox" panelHeight="auto" style="width:180px" onchange="MessageType_change(this)">
                 <option value="MODE">模块</option>
                 <option value="MENU">菜单</option>
                 <option value="TEXT">文本</option>
             </select>
         </td>
     </tr>
     <tr>
         <td align="right">上级编号</td>
         <td align="left"><input id="ParentID" class="combo datebox" style="width:180px; height: 20px;" readonly="true"></td>
         <td align="right">创建人</td>
         <td align="left"><input id="MessageAuthorId" class="combo datebox" style="width:180px; height: 20px;" value="admin" readonly="true"></td>
         <td align="right">创建时间</td>
         <td align="left"><input id="MessageDate" class="combo datebox" style="width:180px; height: 20px;" readonly="true"></td>
     </tr>

     <tr id="Content_textarea">
         <td colspan="">
             内容&emsp;
             <textarea class="ckeditor" cols="" id="MessageContent_ckeditor" name="editor1" rows=""></textarea>

         </td>
     </tr>
 @*    <tr id="Content_input">
         <td>
             内容
         </td>
         <td><input id="MessageContent" class="combo datebox" style="width:180px; height: 20px;"></td>
         <td colspan=""></td>
     </tr>*@
     <tr>
         <td colspan="">&emsp;</td>
     </tr>
 </table>
     </div>

//调用 
   alert($('#dlg').panel('options').title);