switch(location.host){

case "www.leobilliards.com":
location.href="http://www.legobilliards.com.cn/leo/main.html" 
break; 

}
switch(location.host){

case "leobilliards.com":
location.href="http://www.legobilliards.com.cn/leo/main.html" 
break; 

}

switch(location.host){

case "www.leobilliards.com.cn":
location.href="http://www.legobilliards.com.cn/leo/main.html" 

break; 

}
switch(location.host){

case "leobilliards.com.cn":
location.href="http://www.legobilliards.com.cn/leo/main.html" 

break; 

}