问个Ext中FormPanel的菜鸟问题
我用如下代码写了一个FormPanel,文本框的文本后有冒号,为什么checkbox前面也有冒号呢。如何去掉checkbox前面的冒号，请高手指教.

JScript code

 
 var addAdminForm = new Ext.form.FormPanel({ 
         width: 315, 
         height: 270, 
         plain: true, 
         layout: "form", 
         defaultType: "textfield", 
         labelWidth: 55, 
         baseCls: "x-plain", 
         defaults: { anchor: "95%", msgTarget: "side" }, 
         buttonAlign: "center", 
         bodyStyle: "padding:0 0 0 0", 
         items: [ 
                 { 
                     fieldLabel: '管理员', 
                     id: "adminName", 
                     allowBlank: false, 
                     blankText: "请输入账号和密码" 
                 }, { 
                     fieldLabel: '密码', 
                     id: "adminPwd", 
                     allowBlank: false, 
                     blankText: "请输入账号和密码", 
                     inputType: "password" 
                 }, { 
                     fieldLabel: '确认密码', 
                     id: "reAdminPwd", 
                     allowBlank: false, 
                     blankText: "确认密码不能为空", 
                     inputType: "password", 
                     invalidText: '两次密码不一致', 
                     validator: function() { 
                         if (Ext.get('adminPwd').dom.value == Ext.get('reAdminPwd').dom.value) { 
                             return true; 
                         } else { 
                             return false; 
                         } 
                     } 
                 }, new Ext.form.Checkbox({ 
                     boxLabel: "创建管理员账号", 
                     id: "aCreateAdmin" 
                 }), 
                 { 
                     xtype: "checkbox", 
                     boxLabel: "查看分数线", 
                     name: "aSeeGrade"  
 
                 }, { 
                     xtype: "checkbox", 
                     boxLabel: "修改题库", 
                     name: "aUpdateSubjects" 
                 }, { 
                     xtype: "checkbox", 
                     boxLabel: "修改资料学堂", 
                     name: "aUpdateStudyHouse" 
                 } 
         ] 
     }); 
  
 addAdminForm.render(document.body); 
 

[解决办法]
xtype: "checkbox",
labelSeparator:'',
...