For instances when a 3rd party developer has implemented the gadgets into multiples sites or wishes to change the booking 'source' parameter to read something else other than "Online", they can modify and apply the following bit of code to the secure booking page: 

$w(function() {"#gadget",{  
  itineraryCSS: '',   
  confirmationURL: '',  
  bookedBy: 'Mobile',  
  eventTrackingIsRequired: true 

This code will only appear on the secure booking page.

The css file is used to generate the confirmation pdf that is shown on the second step, the confirmation gadget page.