generate the menu for a feature only when it is moused over.  making menus for all the features ahead of time is way too slow.
generate the menu for a feature only when it is moused over.  making menus for all the features ahead of time is way too slow.

limeng12/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,Arabidopsis-Information-Portal/jbrowse,GMOD/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,igemsoftware/Shenzhen_BGIC_0101_2013,igemsoftware/Shenzhen_BGIC_0101_2013,GreggHelt2/apollo-test,erasche/jbrowse,GMOD/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,SuLab/jbrowse,nathandunn/jbrowse,nathandunn/jbrowse,nathandunn/jbrowse,SuLab/jbrowse,GMOD/jbrowse,erasche/jbrowse,Arabidopsis-Information-Portal/jbrowse,GreggHelt2/apollo-test,SuLab/jbrowse,erasche/jbrowse,GreggHelt2/apollo-test,Arabidopsis-Information-Portal/jbrowse,GMOD/jbrowse,limeng12/jbrowse,erasche/jbrowse,limeng12/jbrowse,erasche/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,nathandunn/jbrowse,limeng12/jbrowse,SuLab/jbrowse,Arabidopsis-Information-Portal/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,erasche/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,nathandunn/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,igemsoftware/Shenzhen_BGIC_0101_2013,limeng12/jbrowse,GreggHelt2/apollo-test,erasche/jbrowse,erasche/jbrowse,Arabidopsis-Information-Portal/jbrowse,SuLab/jbrowse,GMOD/jbrowse,SuLab/jbrowse,GreggHelt2/apollo-test,GreggHelt2/apollo-test,SuLab/jbrowse,limeng12/jbrowse,GreggHelt2/apollo-test