How to switch between the plovr src URL and compiled src URL

[mvn...@gmail.com]

Is there a recommended way of switching between the plovr served js url and optimized compiler output js bundle?

When developing I have this:

<script src="http://localhost:9810/?id=myproj"></script>

For release I want this:

<script src="out.js"></script>

Currently, I'm using separate ant targets in JSP's, but is there some clever way to do this without either some build-time regex replacing or without using something that requires a server (think in Chrome Extensions)?