Hmm it's unlikely this is due to the script per say, but rather, your web host's network connection. Regardless though, one thing you can try is upgrading the referenced jQuery library from the default:
Code:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
in the HEAD section of your page to the latest version:
Code:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
Note that due to changes to the library, your page needs a valid doctype at the very top for the script to work properly in the newer library:
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