Right-click menu appears when using playlist

Stan — Aug 10, 2017 12:43PM EDT

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I am trying to disable right-click menu. It is successful when I setup a file but when I use a playlist it is still showing. Here is my code:
<script type="text/javascript">

var playlistmain=new Array();

var newItem = {
file: "/files/stan.mp4",
type: 'mp4'
};

playlistmain.push(newItem);


jwplayer("StrobeMediaPlayback").setup({
width: 960,
height: 540,
autostart: true,
controls: false,
playlist: playlistmain,
abouttext: "test",
aboutlink: "http://www.test.ru",
repeat: false
});
</script>