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<!DOCTYPE html> <html> <body> <img onmouseover="bigImg(this)" onmouseout="normalImg(this)" border="0" src="smiley.gif" alt="笑脸" width="32" height="32"> <p>当用户将鼠标悬停在图像上时，将触发函数 bigImg()。 此功能放大图像。</p> <p>当鼠标指针移出图像时，将触发函数 normalImg()。 该函数将图像的高度和宽度设置回正常值。</p> <script> function bigImg(x) { x.style.height = "64px"; x.style.width = "64px"; } function normalImg(x) { x.style.height = "32px"; x.style.width = "32px"; } </script> </body> </html>