fix issue 170
fix issue 170

kbaggott/dygraphs,davidmsibley/dygraphs,reinert/dygraphs,jmptrader/dygraphs,kbaggott/dygraphs,grantadesign/dygraphs,vhotspur/dygraphs,klausw/dygraphs,timeu/dygraphs,klausw/dygraphs,pshevtsov/dygraphs,danvk/dygraphs,Yong-Lee/dygraphs,kbaggott/dygraphs,davidmsibley/dygraphs,danvk/dygraphs,danvk/dygraphs,cavorite/dygraphs,davidmsibley/dygraphs,klausw/dygraphs,reinert/dygraphs,witsa/dygraphs,witsa/dygraphs,mcanthony/dygraphs,mariolll/dygraphs,timeu/dygraphs,cavorite/dygraphs,petechap/dygraphs,davidmsibley/dygraphs,grantadesign/dygraphs,grantadesign/dygraphs,sanderpick/dygraphs,reinert/dygraphs,Akiyah/dygraphs,cavorite/dygraphs,socib/dygraphs,socib/dygraphs,pshevtsov/dygraphs,mariolll/dygraphs,vhotspur/dygraphs,jmptrader/dygraphs,socib/dygraphs,klausw/dygraphs,kbaggott/dygraphs,panuhorsmalahti/dygraphs,mantyr/dygraphs,grantadesign/dygraphs,mcanthony/dygraphs,pshevtsov/dygraphs,pshevtsov/dygraphs,sanderpick/dygraphs,Yong-Lee/dygraphs,panuhorsmalahti/dygraphs,petechap/dygraphs,mcanthony/dygraphs,witsa/dygraphs,timeu/dygraphs,jmptrader/dygraphs,panuhorsmalahti/dygraphs,mantyr/dygraphs,vhotspur/dygraphs,timeu/dygraphs,Akiyah/dygraphs,Akiyah/dygraphs,mariolll/dygraphs,vhotspur/dygraphs,danvk/dygraphs,Yong-Lee/dygraphs,witsa/dygraphs,timeu/dygraphs,davidmsibley/dygraphs,reinert/dygraphs,grantadesign/dygraphs,Akiyah/dygraphs,pshevtsov/dygraphs,Akiyah/dygraphs,klausw/dygraphs,panuhorsmalahti/dygraphs,kbaggott/dygraphs,witsa/dygraphs,panuhorsmalahti/dygraphs,mantyr/dygraphs,socib/dygraphs,jmptrader/dygraphs,sanderpick/dygraphs,sanderpick/dygraphs,petechap/dygraphs,petechap/dygraphs,mariolll/dygraphs,mcanthony/dygraphs,jmptrader/dygraphs,mariolll/dygraphs,mcanthony/dygraphs,danvk/dygraphs,mantyr/dygraphs,petechap/dygraphs,Yong-Lee/dygraphs,Yong-Lee/dygraphs,vhotspur/dygraphs,cavorite/dygraphs,reinert/dygraphs,mantyr/dygraphs