<script type="text/javascript">
<!--
function resizeIMG(){
var objImg = document.getElementById("pictureID");//pictureID是圖片ID號
var img_w = objImg.width;
var img_h = objImg.height;
var w=parseInt(img_w);var h=parseInt(img_h);
//預設圖片最寬400px,最高300px,可根據需要自行修改
if( w>400 ) objImg.style.width = "400px";
if( h>300 ) objImg.style.height = "300px";
}
//-->
</script>
將以上JS代碼放在<head>中
然後將<body>改成<body onload="resizeIMG()">
在網上找了很多動態改變圖片高寬的代碼，都不行，偶然看到有人說用style來設定高寬的，經我實踐，果然可行
即使在img標籤中設定了高寬，也可改變，看來就算是設定了img的width,height,也可用style修正
我是用的win2003 + IE6 + Maxthon 1.6.1，測試通過，其它瀏覽器沒有測試
以上代碼還可以擴充,比如按比例縮小圖片,有需要的可以自行修改
今天總算有些收穫
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