[OpenLayers-Trac] [OpenLayers] #706: Full CSS support fails when Control.OverviewMap is loaded

[OpenLayers]

#706: Full CSS support fails when Control.OverviewMap is loaded
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  Reporter:  flavour              |       Owner:  tschaub
      Type:  bug                  |      Status:  new    
  Priority:  minor                |   Milestone:         
 Component:  Control.OverviewMap  |     Version:  2.4 RC3
Resolution:                       |    Keywords:         
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Comment (by tschaub):

 This is really a problem with the map adding link nodes to the dom when
 one already exists with an equivalent url.  To solve this problem in a
 more general way, I'm modifying the code that does the theme adding - the
 following patch only adds one link node per unique theme href and has
 tests to prove it.

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Ticket URL: <http://trac.openlayers.org/ticket/706#comment:2>
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