function showspeed(){
	var Tet = new Date();
	var Tsj = Tet - Tst;
	Tsd = Tdx/1024/(Tet - Tst);
		Tsd = Tsd.toFixed(2);
	var Tdk = "";
	if(Tsd<3){
		Tdk = "10M ~ 20M";
	}else if(Tsd>=3 && Tsd<6){
		Tdk = "20M ~ 50M";
	}else if(Tsd>=6 && Tsd<12){
		Tdk = "50M ~ 100M";
	}else{
		Tdk = "100M以上";
	}
	$("#showwan").html(Tdk);
	$("#showtxt").html(Tsd+"Mb/s");
	Tst = "",mst = "";
}	

/** 
 * 获取操作系统 
 * @returns 
 */  
function detectOS() { 
    var sUserAgent = navigator.userAgent; 

    var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows"); 
    var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel"); 
    if (isMac) return "Mac"; 
    var isUnix = (navigator.platform == "X11") && !isWin && !isMac; 
    if (isUnix) return "Unix"; 
    var isLinux = (String(navigator.platform).indexOf("Linux") > -1); 
    var bIsAndroid = sUserAgent.toLowerCase().match(/android/i) == "android";
    if (isLinux) {
        if(bIsAndroid) return "Android";
        else return "Linux"; 
    }
    if (isWin) { 
        var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1; 
        if (isWin2K) return "Windows 2000"; 
        var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || 
        sUserAgent.indexOf("Windows XP") > -1; 
        if (isWinXP) return "Windows XP"; 
        var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1; 
        if (isWin2003) return "Windows 2003"; 
        var isWinVista= sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1; 
        if (isWinVista) return "Windows Vista"; 
        var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1; 
        if (isWin7) return "Windows 7"; 
        var isWin8 = sUserAgent.indexOf("Windows NT 6.2") > -1 || sUserAgent.indexOf("Windows NT 6.3") > -1 || sUserAgent.indexOf("Windows 8") > -1; 
        if (isWin8) return "Windows 8"; 
        var isWin10 = sUserAgent.indexOf("Windows NT 10.0") > -1 || sUserAgent.indexOf("Windows 10") > -1; 
        if (isWin10) return "Windows 10"; 
    } 
    return "other"; 
}

/** 
 * 获取浏览器版本 
 * @returns 
 */  
function getBrowserInfo(){  
    var agent = navigator.userAgent.toLowerCase() ;  
    var regStr_ie = /msie [\d.]+;/gi;  
    var regStr_ff = /firefox\/[\d.]+/gi;  
    var regStr_chrome = /chrome\/[\d.]+/gi;  
    var regStr_saf = /safari\/[\d.]+/gi;  
    //IE  
    if(agent.indexOf("msie") > 0){  
      return agent.match(regStr_ie) ;  
    }  
  
    //firefox  
    if(agent.indexOf("firefox") > 0){  
      return agent.match(regStr_ff) ;  
    }  
  
    //Chrome  
    if(agent.indexOf("chrome") > 0){  
      return agent.match(regStr_chrome) ;  
    }  
  
    //Safari  
    if(agent.indexOf("safari") > 0 && agent.indexOf("chrome") < 0){  
      return agent.match(regStr_saf) ;  
    }  
}