Airline Flight Path - Openlayers behavior (for Drupal)

I need someone to code an Openlayers map behavior that I can deploy on a drupal site (Drupal V7 - Openlayers Module v. 7x-2.0). The behavior should map the flight path between two lat/lon points. Each point is contained in it's own layer (layer 1 contains the lat/lon of the departure airport -- layer 2 contains the lat/lon of the destination airport). The resultant path should resemble the airline paths generated at [login to view URL] (see the attached example). Routes under 1000mi should be shown as straight lines - Routes over 1000mi should be curved. NOTE: Due to the fact that [login to view URL] code is opensource - I will accept bids below $30.