I have nearly finished creating some landing pages with simple contact forms, which when submitted open up a lightbox window.
This is all working fine, however I am unable to add in simple field validation (to ensure all fields are filled in prior to submitting). If any required fields are not filled in we need a message to show up to say 'You have not filled in all fields, please check and press submit when done'.
If anyone can help with this and get it sorted within the next 4 hours that would be great!