图片自动按比例缩小代码（防止页面被图片撑破）

<div id=article><img height="800" alt="" width="1280" src="/down/js/images/12498880470.jpg" /></div>
<script type="text/javascript" >

//缩放图片到合适大小
function ResizeImages()
{
var myimg,oldwidth,oldheight;
var maxwidth=550;
var maxheight=880
var imgs = document.getElementById('article').getElementsByTagName('img');   //如果你定义的id不是article，请修改此处

for(i=0;i<imgs.length;i++){
myimg = imgs[i];

if(myimg.width > myimg.height)
{
if(myimg.width > maxwidth)
{
oldwidth = myimg.width;
myimg.height = myimg.height * (maxwidth/oldwidth);
myimg.width = maxwidth;
}
}else{
if(myimg.height > maxheight)
{
oldheight = myimg.height;
myimg.width = myimg.width * (maxheight/oldheight);
myimg.height = maxheight;
}
}
}
}
//缩放图片到合适大小
ResizeImages();
</script>
<p>查找更多代码，请访问：<a href="http://www.lanrentuku.com" target="_blank">懒人图库</a></p>