<html> <head> <script type="text/javascript"> function GetBrowserVersion() { var Sys = {}; var ua = navigator.userAgent.toLowerCase(); window.ActiveXObject ? Sys.ie = ua.match(/msie ([\d.]+)/)[1] : document.getBoxObjectFor ? Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1] : window.MessageEvent && !document.getBoxObjectFor ? Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1] : window.opera ? Sys.opera = ua.match(/opera.([\d.]+)/)[1] : window.openDatabase ? Sys.safari = ua.match(/version\/([\d.]+)/)[1] : 0; if(Sys.ie) return('IE: '+Sys.ie); if(Sys.firefox)return('FF:'+Sys.firefox); if(Sys.chrome) return('CH:'+Sys.chrome); if(Sys.opera) return('OP:'+Sys.opera); if(Sys.safari) return('SA:'+Sys.safari); } alert(GetBrowserVersion()); </script> </head> <body> aa </body> </html>