function ResizeImage(image, maxwidth, maxheight)
{
	w = image.width;
	h = image.height;
			
	if( w == 0 || h == 0 )
	{
		image.width = maxwidth;
		image.height = maxheight;
	}
	else if (w > h)
	{
		if (w > maxwidth) image.width = maxwidth;
	}
	else
	{
		if (h > maxheight) image.height = maxheight;
	}
}