当鼠标悬停在图像上时显示放大的图片

在我的网页上，我想放一个图像，这样当鼠标指针悬停在该图像上时，就会出现一个放大的版本。

根据评论中对需求的进一步解释更新了CSS解决方案

http://jsfiddle.net/5sRTX/7/

<div class="effectback">
<img class="effectfront" src="https://farm8.staticflickr.com/7042/6873010155_d4160a32a2.jpg" />
</div>
attribution<br/>
https://secure.flickr.com/photos/34022876@N06/6873010155/sizes/m/in/photostream/
.effectback {
  display: block;
  background: url('https://farm8.staticflickr.com/7042/6873010155_d4160a32a2_s.jpg') no-repeat;
    margin: 0 auto;
}
.effectfront {
  opacity: 0;
  border: none;
  margin: 0 auto;
}
.effectfront:hover {
  opacity: 1;
  transition: all 0.3s;
  -webkit-transition: all 0.3s;
}

基于原始问题的原始css解决方案

CSS解决方案

http://jsfiddle.net/ERh62/1/

.effectscale {
  border: none;
  margin: 0 auto;
}
.effectscale:hover {
  -webkit-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -o-transform: scale(1.2);
  transform: scale(1.2);
  transition: all 0.3s;
  -webkit-transition: all 0.3s;
}

<img src="..." onmouseover="this.width='someWidth'; this.height='someHeight'" onmouseout="this.width='originalWidth'; this.height='originalHeight'">

试试这个：

<html>
<head>
<style>
    .container{
        overflow:hidden;
        width:300px;/*change this to whatever you want*/
        height:150px;/*change this to whatever you want*/
        /*Of course, to get the desired effect, the size of the image "<img>" below must be larger than the size mentioned above*/
    }
    .container:hover{
        overflow:visible
    }
</style>
</head>
<body>
    <div class='container'><img src='myImage.png'/></div>
</body>
</html>

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