bugs.utorrent.com redirected to utbugs.leetwebhosting.com which is down so I will make my bug report here. Just as I reported in February, the same mistake was made: .insertRule('cssRule { ... };' You are attempting to insert invalid css using insertRule. Following the spec, Safari and Opera throw a SYNTAX_ERR exception when the rule has a syntax error or is otherwise unparsable. This is on line 999 of the prettified stable.js. To find it in the compressed version, just search for };' and remove the semicolon. Here is a fixed version that works in Safari and Opera. Keep in mind it is 1 character different from the original. In stable.js, the 20,882nd character (a semicolon) is removed. Again I would like to offer my services in the javascript department. I see a lot of room for improvement and optimization.