判断ブラウザ(ie 9-その他)

       function browerversion() {
        var ua = navigator.userAgent,
            ver = 0,
            versiondata,
            versionbool;

            if(ua){
                if(ua.match(/MSIE\s+([\d]+)\./i)){
                    ver = RegExp.$1;
                }else if(ua.match(/Trident.*rv\s*:\s*([\d]+)\./i)){
                    ver = RegExp.$1;
                }
            }

            versiondata = parseInt(ver);

            if(versiondata <= 9 && versiondata != 0){
                versionbool = true;
            }else{
                versionbool = false;
            }
        
            // versionbool    true:   ie9   false: ie10+
            return versionbool;
    }