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 有时网页很容易被大图片撑开，下面的小技巧可以用来解决这个问题：<script language="JavaScript" type="text/javascript">
 <!-- 
function DrawImage(ImgD,FitWidth,FitHeight){
     var image=new Image();
     image.src=ImgD.src;
     if(image.width>0 && image.height>0){
         if(image.width/image.height>= FitWidth/FitHeight){
             if(image.width>FitWidth){
                 ImgD.width=FitWidth;
                 ImgD.height=(image.height*FitWidth)/image.width;
             }else{
                 ImgD.width=image.width; 
                ImgD.height=image.height;
             }
         } else{
             if(image.height>FitHeight){
                 ImgD.height=FitHeight;
                 ImgD.width=(image.width*FitHeight)/image.height;
             }else{
                 ImgD.width=image.width; 
                ImgD.height=image.height;
             } 
        }
     }
 }
 //-->
 </script>

<img src="XXXX" alt="自动缩放后的效果"  onload="javascript:DrawImage(this,"200","200");" />