<title>javascript图片大小处理函数</title>
<script language=Javascript>
var proMaxHeight = 150;
var proMaxWidth = 110;
function proDownImage(ImgD){
var image=new Image();
image.src=ImgD.src;
if(image.width>0 && image.height>0){
var rate = (proMaxWidth/image.width < proMaxHeight/image.height)?proMaxWidth/image.proMaxHeight/image.height;
if(rate <= 1){
ImgD.width = image.width*rate;
ImgD.height =image.height*rate;
}
else {
ImgD.width = image.width;
ImgD.height =image.height;
}
}
}
</script>
</head>
<body>
<img src="999.jpg" border=0 width="150" height="110" onload=proDownImage(this); />
<img src="room.jpg" border=0 width="150" height="110" onload=proDownImage(this); />
</body>
纯css的防止图片撑破页面的代码，图片会自动按比例缩小
<style type="text/css">
.content-width {MARGIN: auto;WIDTH: 600px;}
.content-width img{MAX-WIDTH: 100%!important;HEIGHT: auto!important;width:expression(this.width > 600 ? "600px" : this.width)!important;}
</style>
<div class="content-width">
<p><img src="/down/js/images/12567247980.jpg"/></p>
<p><img src="/down/js/images/12567247981.jpg"/></p>
</div>