Isabelle the Pug- it depends on the browser; Chrome has an Extensions manager, with Firefox check the Plug-ins manager in the tools menu. I really don't know anything about this script other than someone else had this problem this morning, and I just googled the domain and discovered it referenced in the glitch-strategy wiki to discover what the issue was. So hopefully if you are running it and it's a problem, you can disable via the browser specific 3rd party managers :-)