js动画(animate)简单引擎代码示例(7)

//detect windows operating systems
        if (system.win){
            if (/Win(?:dows )?([^do]{2})\s?(\d+\.\d+)?/.test(ua)){
                if (RegExp["$1"] == "NT"){
                    switch(RegExp["$2"]){
                        case "5.0":
                            system.win = "2000";
                            break;
                        case "5.1":
                            system.win = "XP";
                            break;
                        case "6.0":
                            system.win = "Vista";
                            break;
                        case "6.1":
                            system.win = "7";
                            break;
                        default:
                            system.win = "NT";
                            break;               
                    }                           
                } else if (RegExp["$1"] == "9x"){
                    system.win = "ME";
                } else {
                    system.win = RegExp["$1"];
                }
            }
        }

        //mobile devices
        system.iphone = ua.indexOf("iPhone") > -1;
        system.ipod = ua.indexOf("iPod") > -1;
        system.ipad = ua.indexOf("iPad") > -1;
        system.nokiaN = ua.indexOf("NokiaN") > -1;

        //windows mobile
        if (system.win == "CE"){
            system.winMobile = system.win;
        } else if (system.win == "Ph"){
            if(/Windows Phone OS (\d+.\d+)/.test(ua)){;
                system.win = "Phone";
                system.winMobile = parseFloat(RegExp["$1"]);
            }
        }