+ GifByteType *extensionByte( NULL );
+
+#ifdef LIBGIF_VERSION_5_1_OR_ABOVE
+ ExtensionBlock extensionBlocks;
+ image.ExtensionBlocks = &extensionBlocks;
+ image.ExtensionBlockCount = 1;
+ int *extensionBlockTypePointer = &image.ExtensionBlocks->Function;
+#else