// JScript 文件
//function DrawImage(ImgD,iwidth,iheight){ 

//    var width = ImgD.width; 
//    var height = ImgD.height; 
//                     
//    if (width > iwidth ) mypic.width = iwidth; 
//    if (height > iheight ) mypic.height = iheight; 
//} 
//等比例
 function DrawImage(ImgD,iwidth,iheight) { 
     var image=new Image(); 
     image.src=ImgD.src; 
     if(image.width>0 && image.height>0){ 
        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; 
                   
           } 
        } 
        else{ 
                if(image.height>iheight){ 
                       ImgD.height=iheight; 
                       ImgD.width=(image.width*iheight)/image.height; 
                }else{ 
                        ImgD.width=image.width; 
                        ImgD.height=image.height; 
                     } 
            } 
    } 
}