extjs创建弹窗输入框

function changPwd(){GLOBAL.pwdBox = new Ext.custom.basicWindow({title:"修改密码",width:500,height:340,bodyPadding:"20",items:[{xtype:"panel",items:[new Ext.custom.middletextfield({itemId:"Pwd",fieldLabel:"当前密码",beforeLabelTextTpl:required,inputType:"password",margin:"10"}),new Ext.custom.middletextfield({itemId:"newPwd",fieldLabel:"新的密码",inputType:"password",beforeLabelTextTpl:required,margin:"10"}),new Ext.custom.middletextfield({itemId:"trueId",