js图片拖拽查看并滑动鼠标可放大缩小

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js图片拖拽查看并滑动鼠标可放大缩小,具体见如下代码:
html代码:
<style type="text/css">
body{background-color:#555;color:#fff;}
a img{border:none;}
#imageView_container{border:2px solid #000;margin:0 auto;}
#imageView_container.iv-loading{border:2px solid #ff6600;}
</style>
</head>
<body>
<div id="imageView_container">
<img src="images/sad2.jpg" rel="images/sad2.jpg" alt="" onmousewheel="return bbimg(this)"/>
</div>
</body>
</html>
js代码:
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/jquery.imageView.js"></script>下载并引用
$(function() {
$('#imageView_container').imageView({width:850, height:708});
});
<script language="javascript">
function bbimg(o){ 
var zoom=parseInt(o.style.zoom, 10)||100;
zoom+=event.wheelDelta/12;
if (zoom>0) o.style.zoom=zoom+'%';
return false;
}
</script>
ok
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