DWR contains a creator that will work with PageFlow objects from Weblogic or Beeehive.
As of DWR 1.1 an experimental PageFlowCreator is included with the normal DWR download. You can use this from dwr.xml as follows:
<allow> ... <create creator="pageflow" javascript="ScriptName"/> ... </allow>
This will allow you to make calls into your PageFlow from DWR.
This JSF integration was written by Kevin Conaway.