JavaScript developers commonly break out their JavaScript into separate .js files and then include them in the document, like so:
<script src="text/javascript" src="global.js"></script>
<script src="text/javascript" src="navigation.js"></script>
<script src="text/javascript" src="popup.js"></script>
<script src="text/javascript" src="lightbox.js"></script>
Bundling them into one file eliminates the two-connection limit problem.
<script src="text/javascript" src="bigbundle.js"></script>