tos.js is an anti-javascript ToS checker. It helps you enforce all the anti-javascript clauses of your Terms of Service.
To use tos.js, just include this on your website:
<script src="https://wolf480.pl/w/tos.js" type="text/javascript"></script>
<script>
checkTosViolation("https://[url to your ToS goes here]")
</script>