I got the ScriptManager and ScriptManagerProxy to talk to jquery using this technique. But the ScriptReference tag doesn't seem to have a way to deal with this:
<!--[if lte IE 8]>
<script language="javascript"
type="text/javascript"
src="../Scripts/excanvas.min.js"></script>
<![endif]-->
Is there a way to use the ScriptManager to do that, or do I need to roll my own? (At the moment, I'm just using the script manager to calculate the right number of ../.. symbols to put before the address of the script.)