[fusion-trac] #576: Improve error handling

[Fusion]

#576: Improve error handling
-----------------------+----------------------------------------------------
   Reporter:  jng      |       Owner:  madair
       Type:  defect   |      Status:  new   
   Priority:  P2       |   Milestone:  Future
  Component:  Widgets  |     Version:  2.0   
   Severity:  Major    |    Keywords:        
External_id:           |       State:  New   
    Browser:  All      |          Os:  All   
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 * Do not use alert() to display errors. Most browsers are still stuck in
 the last millenium and use native window-modal dialogs to display our
 pretty verbose error messages. Use the Jx.Dialog to show these errors
 instead

  * For session expired errors, offer the choice of reloading the viewer.

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Ticket URL: <http://trac.osgeo.org/fusion/ticket/576>
Fusion <http://trac.osgeo.org/fusion>
Fusion is a web-mapping application development framework for MapServer and MapGuide OS.