图片特效-重新加载验证码图片
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<script type="text/javascript">
function loadImg(){
var pic = document.getElementById('pic');
pic.src = '1.jpg?time='+new Date().getTime();
}
</script>
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<body style="text-align:center">
<p>
<input type="button" value="重新加载" onclick="loadImg();"/>
</p>
<img src="1.jpg" width="150" height="100" id="pic"/>
</body>
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