Last year the tool in5 (InDesign to HTML5) launched following a successful Kickstarter campaign. Now it’s expanding its publishing chops:
Last month, we added support for InDesign’s native Liquid Layout, allowing for a single, responsive design in HTML5, as well as support the Baker Framework (which is an open source ebook format for iOS devices).
This week, we’ve added support for Multi-State Objects, Form Elements, and several additional Button behaviors, allowing a user to create an enormous amount of interactivity from InDesign.
People interested in the print-to-Web workflow may also want to check out Michael Murphy’s $79 course on the topic: https://www.udemy.com/from-indesign-to-html/
This article on Smashing Magazine describes how to use InDesign’s interactive features for wireframing and prototyping. Check out how to use InDesign with In5 better
http://www.smashingmagazine.com/2013/03/07/creating-wireframes-and-prototypes-with-indesign/
Michael Murphy has a course at lynda.com on using InDesign for Web Design too.
http://www.lynda.com/InDesign-tutorials/InDesign-Web-Design/105366-2.html