in reply to trouble with regular expressions
This looks like you've downloaded a jQuery plugin from someone who has inserted a malicious iframe in an attempt to display to a defunct (possibly nefarious) site. Consider actually checking the code you download before using it. Now that you've found it why not make it easier on yourself and get the plugin jQuery plugin in question from a trusted source, in an unpacked form and examine it before you use it.
In Section
Seekers of Perl Wisdom