import xbmc, os

guisettingsFile=xbmc.translatePath("special://profile/guisettings.xml")

fh=open(guisettingsFile, 'r')
content= fh.read()
fh.close()

if content.find("<adjustrefreshrate>false</adjustrefreshrate>")>=0:
  xbmc.executehttpapi("SetGUISetting(1;videoplayer.adjustrefreshrate;true)")
  xbmc.executebuiltin('XBMC.Notification(Info:,Bildwiederholfrequenz anpassen: AN,5000)')
elif content.find("<adjustrefreshrate>true</adjustrefreshrate>")>=0:
  xbmc.executehttpapi("SetGUISetting(1;videoplayer.adjustrefreshrate;false)")
  xbmc.executebuiltin('XBMC.Notification(Info:,Bildwiederholfrequenz anpassen: AUS,5000)')
xbmc.executebuiltin("ReloadSkin()")