msie is what is returned from the now-removed jQuery browser
method if the user is using Internet explorer.
That method got removed in jQuery 1.9 and being that you include the latest version of jquery, here:
your page broke itself, all by itself.
you can do two things: load a pre-1.9 version of jQuery instead, like this:
or keep using the latest and provide your own browser-sniffer, like this post