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I need to find a way where I can dynamically change the source of a processing script inside an HTML document. This is the embedded script which works fine: <script type='application/processing' src='sketch.txt' id="applet"> </script> Now I try to change the source: $('#applet').attr('src', 'sketch2.txt'); alert($('#applet').attr('src')); The alert shows that the source was changed to 'sketch2.txt' but the applet still remains the same. I think I need to refresh the script in some way. Thank you in advance for any help!