// JScript 文件



/*实现图片的按比例缩放*/ 

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; 

                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; 

        } 

    } 

} 

//  ---------------------------------------