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<!DOCTYPE html> <html> <head> <script> function bigImg(x) { x.style.height = "150px"; x.style.width = "150px"; } function normalImg(x) { x.style.height = "50px"; x.style.width = "50px"; } </script> </head> <body> <img onmouseover="bigImg(this)" onmouseout="normalImg(this)" border="0" src="/i/eg_smile.gif" alt="Smiley" width="128" height="128"> <p>当用户将鼠标指针移到图像上时，会触发 bigImg() 函数。</p> <p>当鼠标指针移出图像时，会触发 normalImg() 函数。</p> </body> </html>