function detectBrowser(ns){
var ua = ns.ua = navigator.userAgent;
ns.isWebKit = (/webkit/i).test(ua);
ns.isMozilla = (/mozilla/i).test(ua);
ns.isIE = (/msie/i).test(ua);
ns.isFirefox = (/firefox/i).test(ua);
ns.isChrome = (/chrome/i).test(ua);
ns.isSafari = (/safari/i).test(ua) && !this.isChrome;
ns.isMobile = (/mobile/i).test(ua);
ns.isOpera = (/opera/i).test(ua);
ns.isIOS = (/ios/i).test(ua);
ns.isIpad = (/ipad/i).test(ua);
ns.isIpod = (/ipod/i).test(ua);
ns.isIphone = (/iphone/i).test(ua) && !this.isIpod;
ns.isAndroid = (/android/i).test(ua);
ns.supportStorage = "localStorage" in window;
ns.supportOrientation = "orientation" in window;
ns.supportDeviceMotion = "ondevicemotion" in window;
ns.supportTouch = "ontouchstart" in window;
ns.cssPrefix = ns.isWebKit ? "webkit" : ns.isFirefox ? "Moz" : ns.isOpera ? "O" : ns.isIE ? "ms" : "";
};
// 判断是否为移动端运行环境
// wukong.name 20130716
if(/AppleWebKit.*Mobile/i.test(navigator.userAgent) || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))){
if(window.location.href.indexOf("?mobile")<0){
try{
if(/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){
// 判断访问环境是 Android|webOS|iPhone|iPod|BlackBerry 则加载以下样式
setActiveStyleSheet("style_mobile_a.css");
}
else if(/iPad/i.test(navigator.userAgent)){
// 判断访问环境是 iPad 则加载以下样式
setActiveStyleSheet("style_mobile_iPad.css");
}
else{
// 判断访问环境是 其他移动设备 则加载以下样式
setActiveStyleSheet("style_mobile_other.css");
}
}
catch(e){}
}
}
else{
// 如果以上都不是,则加载以下样式
setActiveStyleSheet("style_mobile_no.css");
}
// 判断完毕后加载样式
function setActiveStyleSheet(filename){document.write("<link href="+filename+" rel=stylesheet>");}