Script visible at the bottom of every page

This code (see below) is displaying at the bottom of every page with the default-enabled theme (but does not display with the admin theme).
I am using a Top Notch Theme named Lockdown, running the latest D6 (except that XML Sitemap module is one version out of date).
The script, below is visible at the bottom of each page, as I've described. After disabling the module, obviously the script is no longer visible.

__compete_code = '43dec5a86c5e010f620efc50154d5188'; (function () { var s = document.createElement('script'), d = document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0], t = 'https:' == document.location.protocol ? 'https://c.compete.com/bootstrap/' : 'http://c.compete.com/bootstrap/'; s.src = t + __compete_code + '/bootstrap.js'; s.type = 'text/javascript'; s.async = 'async'; if (d) { d.appendChild(s); } }());