Generate email text from FORM data

I am using LiveCycle Designer 8 and am trying to create a button with some Javascript.

Essentially what I want to do it to generate an email that merges text from a PDF form into the email message itself. Ideally, as the form is being completed the user could simply push a button that opens an email with the desired form information (only a few fields) then simply hit send.

Any help is very much appreciated.