Yes, Java's syntax is derived from C and C++ which makes it possible, but im not sure about Javascript, Im unsure because Javascript is derived from C's syntax which makes it possible to make a keylogger, but for a correct answer have to ask Cruel or speljohan. You would also have to watch out for the newer languages like Ruby which are derived from Python and Python is derived from Perl and Perl is derived from C. Basically anything can be made into a corruptive file which can damage/corrupt your computers files, just scan with virusscan.jotti.org and your personal anti-virus, most stuff that is binded is poorly binded and is highly detectable, and if it passes your tests more than twice, its a pretty safe download. Could I also redirect the readers of this post to this thread,
http://sythe.org/announcement.php?f=230
I think it would be wise to cease discussion and wait for the thread to be locked.