Hi Cathal, Thanks for taking time to provide the solution. Can you please share the java script again. the link above is old, and is not working.
Thanks
Deepak
Hi Deepak,
This discussion is from 2013 and the Javascript solution is no long neccessary. Please see the following documentation on Forms 2.0 and visibility rules to set this up. Dynamically Toggle Visibility of a Form Field - Marketo Docs - Product Docs