Not sure. But you probably just need to get rid of the extra jquery includes. You've got both
[...] /themes/MrProp01/library/js/jquery-1.2.6.min.js
and
[...] /themes/MrProp01/jquery-1.3.2.js
in there. A few lines later you have
[...] wp-includes/js/jquery/jquery.js?ver=1.7.1
The first two are really old. You need to go through your theme source and remove those references.
Then add call to wp_enqueue_script in your theme's functions.php or header.php to include jquery. This ensures you only get one instance of the script and always the most recent version.
If you don't know how to use that function, just copy it from my plugin.