图片成比例缩放－－分享
<script>
function DrawImage(ImgD){
var image=new Image();
var iwidth = 120; //定义允许图片宽度
var iheight = 90; //定义允许图片高度
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;
}
}
}
</script>
<html><body>
<img src="http://community.csdn.net/ADV/Images/CSDN-11.GIF" name="dd" onload="DrawImage(this);">
</body>
</html>
<script>
function DrawImage(ImgD){
var image=new Image();
var iwidth = 120; //定义允许图片宽度
var iheight = 90; //定义允许图片高度
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;
}
}
}
</script>
<html><body>
<img src="http://community.csdn.net/ADV/Images/CSDN-11.GIF" name="dd" onload="DrawImage(this);">
</body>
</html>
[此贴子已经被作者于2007-7-9 10:55:57编辑过]
2007-7-9 10:46
