// JScript 檔

var flag=false; 
function DrawImage(ImgD,imgWidth,imgHeight){ 
var image=new Image(); 
image.src=ImgD.src; 
if(image.width>0 && image.height>0){ 
flag=true; 
if(image.width/image.height>= imgWidth/imgHeight){ 
if(image.width>imgWidth){ 
ImgD.width=imgWidth; 
ImgD.height=(image.height*imgWidth)/image.width; 
}else{ 
ImgD.width=image.width; 
ImgD.height=image.height; 
} 

} 
else{ 
if(image.height>imgHeight){ 
ImgD.height=imgHeight; 
ImgD.width=(image.width*imgHeight)/image.height; 
}else{ 
ImgD.width=image.width; 
ImgD.height=image.height; 
} 

} 
} 
}