一个跟随鼠标的图片放大效果，与FF兼容

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</div>
<div align=center style="overfow: hidden; width: 100px; height: 100px">
<img src="https://zhanzhang360.qulang.net/imgupload/001096/200742616381460.jpg" width="100" height="100" border="0" onmouseover="show(this)" onmouseout="hide(this)">
</div>
<div align=center style="overfow: hidden; width: 100px; height: 100px">
<img src="https://zhanzhang360.qulang.net/imgupload/001096/200742616383849.jpg" width="100" height="100" border="0" onmouseover="show(this)" onmouseout="hide(this)">
</div>
<div id="enlarge_images" style="position: absolute; z-index:2"></div>

<SCRIPT>        
function show(_this) {
    document.getElementById("enlarge_images").innerHTML = "<img src='" + _this.src + "' >";
}
function hide(_this) {
    document.getElementById("enlarge_images").innerHTML = "";
}
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document.onmousemove =move_layer;
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