51help TIY
码：
<html> <head> <script type="text/javascript"> function nameon() { document.getElementById('h2text').innerHTML="欢迎！" } function nameout() { document.getElementById('h2text').innerHTML="么样？" } </script> </head> <body> <h2 id="h2text" onmouseout="nameout()" onmouseover="nameon()"> ！</h2> </body> </html>
查看结果: