public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "image/jpeg";
        context.Response.Expires = -1;
        string[] fNamesBG = Directory.GetFiles(context.Server.MapPath("~/images/BG"));
        string[] fNamesItem = Directory.GetFiles(context.Server.MapPath("~/images/items"));
        Random r = new Random();
        
        Image imgBG = Image.FromFile(fNamesBG[(int)Math.Floor(r.NextDouble() * fNamesBG.Length)]);

        for (int i = 0; i < 10; i++)
        {
            
            string path = fNamesItem[(int)Math.Floor(r.NextDouble() * fNamesItem.Length)];
            Image imgItem = Image.FromFile(path);
            Graphics g = Graphics.FromImage(imgBG);
            g.DrawImage(imgItem, (float) r.NextDouble() * imgBG.Width, (float) r.NextDouble() * imgBG.Height);
            g.Dispose();
            imgItem.Dispose();
        }
        
        imgBG.Save(context.Response.OutputStream, ImageFormat.Jpeg);
        imgBG.Dispose();
    }