easyui window初始化窗口最大化

 parent.WIN.open({
                title:name+":"+"  "+"工程建档管理",
                url:'/System/Preview?UICode=MeterEp.List&communityId='+communityId+'&districtId='+districtId,
                width:1428,  
                height:700,
                modal:true,
                maximizable:true,
                maximized:true   //初始化窗口最大化
            });