{"type":"rich","version":"1.0","title":"W 3 Schools for the mouse track; JavaScript.Info for the ball drag!!\nEither ball will free-drag on a double-click.","provider_name":"Plunker","provider_url":"https://plnkr.co","html":"<iframe id=\"plnkr_embed_krW9OGf7Z6l7eN5EHSzn\" class=\"plnkr_embed_iframe\" style=\"width: 100%; overflow: hidden;\" src=\"https://embed.plnkr.co/plunk/krW9OGf7Z6l7eN5EHSzn?autoCloseSidebar&deferRun&show=preview\" width=\"600\" height=\"400\" frameborder=\"0\" scrolling=\"no\"></iframe>","width":600,"height":400,"thumbnail_url":"https://shot.plnkr.co/krW9OGf7Z6l7eN5EHSzn.png?d=2018-04-28T15%3A51%3A20.842Z","thumbnail_width":400,"thumbnail_height":300}