var Sys = {};
                var ua = navigator.userAgent.toLowerCase();
                var s;
                (s = ua.match(/msie ([\d.]+)/)) ? Sys.ie = s[1] :
                (s = ua.match(/firefox\/([\d.]+)/)) ? Sys.firefox = s[1] :
                (s = ua.match(/chrome\/([\d.]+)/)) ? Sys.chrome = s[1] :
                (s = ua.match(/opera.([\d.]+)/)) ? Sys.opera = s[1] :
                (s = ua.match(/version\/([\d.]+).*safari/)) ? Sys.safari = s[1] : 0;