<SCRIPT>try { if( self.location == "http://域名一/" ) { top.location.href = "目录一/index.html"; } else if( self.location == "http://域名二/" ) { top.location.href = "目录二/index.html"; } else { } } catch(e) { }</SCRIPT>原文：http://www.cnblogs.com/csharphuang/p/4242911.html