try {if( location.host == "218.28.226.67" ) { 
document.write ("错误的访问地址");
document.execCommand("stop"); 
} 
else if( location.host == "218.28.226.68" ) { 
document.write ("错误的访问地址");
document.execCommand("stop"); 
} 
else if( location.host == "218.28.226.69" ) { 
document.write ("错误的访问地址");
document.execCommand("stop"); 
} 
} catch(e) {}