public static Bitmap screenshot(this Uri uri, int width, int height, int thumbnailWidth, int thumbnailHeight)
 {
     return(O2BrowserIE_Screenshot.open(uri.ToString(), width, height, thumbnailWidth, thumbnailHeight));
 }
 public static Bitmap takeScreenshot(this Uri uri)
 {
     return(O2BrowserIE_Screenshot.open(uri));
 }