easyUI 環境下，關閉打開的窗口的方法

function see(id,state) {
        if (id == undefined) {
            var rows = dataGrid.datagrid('getSelections');
            id = rows[0].id;
        } else {
            dataGrid.datagrid('unselectAll').datagrid('uncheckAll');
        }
        parent.$.modalDialog({
            title : '局長信箱回覆查看',
            width : 520,
            height : 500,
            href : '${path }/bizMailBoxCtrl/seePage.do?id=' + id,
            buttons : [ {
                text : '確定',
                handler : function() {
                    parent.$.modalDialog.handler.dialog('close');
                }
            } ]
        });
    };