correct js code

<script>
jQuery( document ).ready( function() {
    var container = jQuery( "#fixed_floating_menu" ),
        menu = jQuery( "#fixed_floating_menu .et_pb_fullwidth_menu" ),
        pos = container.position();
    if ( container.length ) {
        $( window ).scroll( function() {
            var windowpos = jQuery( window ).scrollTop();
            if ( windowpos >= pos.top ) {
                menu.addClass( "stick" );
                container.addClass( "hold" );
            } else {
                menu.removeClass( "stick" );
                container.removeClass( "hold" );
            }
        } );
    }
} );
</script>