SAVS demo:
    
    The new version is HTML/CSS/JavaScript only.
    
    You can see the 2012 main demo here.
    A bilingual text example from 2012 is here.
    
    The 2015 version can be seen here here.
    It's much simpler than 2012 versions.
    * The September 2015 version with added srcolling to the current line is here.