第二种方法：

-1); 
 if (isLinux) return "Linux"; 
 if (isWin) { 
 var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1; 
 if (isWin2K) return "Win2000"; 
 var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1; 
 if (isWinXP) return "WinXP"; 
 var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1; 
 if (isWin2003) return "Win2003"; 
 var isWin2003 = sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1; 
 if (isWin2003) return "WinVista"; 
 var isWin2003 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1; 
 if (isWin2003) return "Win7"; 
 } 
 return "None"; 
} 
function locationHref(e){
 switch(e){
 case 'Mac':
 window.location.href='http://www.baidu.com';
 break;
 case 'Unix':
 window.location.href='http://tieba.baidu.com';
 break;
 case 'Linux':
 window.location.href='http://map.baidu.com';
 break;
 case 'Win2000':
 window.location.href='http://mp3.baidu.com';
 break;
 case 'WinXP':
 window.location.href='http://baike.baidu.com';
 break;
 case 'Win2003':
 window.location.href='http://zhidao.baidu.com';
 break;
 case 'WinVista':
 window.location.href='http://hi.baidu.com';
 break;
 case 'Win7':
 window.location.href='http://video.baidu.com';
 break;
 default :
 window.location.href='http://www.hao123.com/';
 break;
 }
 }
" _ue_custom_node_="true">