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<title>用鼠标滚轮滚动控制图片的缩小放大</title>
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<p>将鼠标放在图片上，点击一下，然后滚动鼠标滚轮试试看</p>
<p><img border="0" src="/images/m01.jpg" onmousewheel="return bbimg(this)"></p>
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