<script language="JavaScript">
<!--
// 圖片按比例縮放
var flag=false;
function DrawImage(ImgD){
var image=new Image();
var iwidth = 550; // 定義允許圖片寬度,當寬度大於這個值時等比例縮小
var iheight = 412; // 定義允許圖片高度,當寬度大於這個值時等比例縮小
image.src=ImgD.src;
if(image.width>0 && image.height>0){
flag=true;
if(image.width/image.height>= iwidth/iheight){
if(image.width>iwidth){
ImgD.width=iwidth;
ImgD.height=(image.height*iwidth)/image.width;
}else{
ImgD.width=image.width;
ImgD.height=image.height;
}
ImgD.alt=image.width+"×"+image.height;
}
else{
if(image.height>iheight){
ImgD.height=iheight;
ImgD.width=(image.width*iheight)/image.height;
}else{
ImgD.width=image.width;
ImgD.height=image.height;
}
ImgD.alt=image.width+"×"+image.height;
}
}
}
//調用
// -->
</script>
<img
src="http://www.baidu.com/img/baidu_sylogo1.gif" οnlοad="javascript:DrawImage(this)">