public void unHighlightAyah() {
   View v = mQuranPage.getCurrentPage();
   if (v != null) {
     HighlightingImageView iv = (HighlightingImageView) v.findViewById(R.id.page_image);
     if (iv != null) {
       HighlightingImageView hi = (HighlightingImageView) iv;
       hi.unhighlight();
       mQuranPage.invalidate();
     }
   }
 }
 @Override
 public void unHighlightAyat() {
   mImageView.unhighlight();
 }