function scaleImg(what,w,h)
        {
        var saveWidth = 0;
        var saveHeight = 0;


        
        var maxWidth = w;
        var maxHeight = h;
        var ratio = 1;

        what = document.getElementById(what);

        if (what.width > maxWidth || what.height > maxHeight)
        {
        if ((maxHeight / what.height) <= (maxWidth / what.width))
        {
        saveWidth = what.width;
        saveHeight = what.height;
        ratio = what.width / what.height; 
        what.height = maxHeight;
        what.width = maxHeight * ratio;        
        }
        else
        {
        saveWidth = what.width;
        saveHeight = what.height;
        ratio = what.height / what.width; 
        what.height = maxWidth * ratio ;
        what.width = maxWidth;        
        }
        }
        else if (saveWidth > maxWidth || saveHeight > maxHeight)
        {
        what.width = saveWidth;
        what.height = saveHeight;        
        }
}