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<head> <title> </title> <meta name= "GENERATOR " content= "Microsoft Visual Studio .NET 7.1 "> <meta name=ProgId content=VisualStudio.HTML> <script language=javascript> function showLine() { var e=event.srcElement; e.style.borderBottom= "10px red solid "; } function hideLine() { var e=event.srcElement; e.style.borderBottom= " "; } </script> </head> <body> <a style= 'text-decoration:none ' href= "http://www.ssm1226.com " οnmοuseοver= 'showLine() ' οnmοuseοut= "hideLine() "> ssm1226 </a> </body>还有一种方法是图片背景啦!