谷歌不兼容showModalDialog()方法出现对话窗口解决方法

<script type="text/javascript">
        //开启模式窗口
        function showMyModal() {
            var url = "SelectUser.aspx";
            //传入参数示例

            var modalReturnValue = myShowModalDialog(url, window, 300, 500);
            //alert(modalReturnValue.name);
            //窗口关闭后执行某些方法
            //TODO　sth
        }
        //弹出框google Chrome执行的是open
        function myShowModalDialog(url, args, width, height) {
            var tempReturnValue;
            if (navigator.userAgent.indexOf("Chrome") > 0) {
                var paramsChrome = ‘height=‘ + height + ‘, width=‘ + width + ‘, top=‘ + (((window.screen.height - height) / 2) - 50) +
                    ‘,left=‘ + ((window.screen.width - width) / 2) + ‘,toolbar=no, menubar=no, scrollbars=no, resizable=no, location=no, status=no‘;
                window.open(url, "newwindow", paramsChrome);
            }
            else {
                var params = ‘dialogWidth:‘ + width + ‘px;dialogHeight:‘ + height + ‘px;status:no;dialogLeft:‘
                            + ((window.screen.width - width) / 2) + ‘px;dialogTop:‘ + (((window.screen.height - height) / 2) - 50) + ‘px;‘;
                tempReturnValue = window.showModalDialog(url, args, params);
            }
            return tempReturnValue;
        }
    </script>