How do I open a PDF from HTML output?

Hi all,

We're currently in the process of publishing some of our service manuals in HTML5 format for web/mobile device usage.

We seem to have sorted out most issues but one remains.

We want to be able to click on an icon or text on the HTML5  page and open a PDF (wiring diagram) as a separate document in Acrobat Reader.

I can't seem to find a way to make this happen other than by editing the HTML code post-publishing (a href).

Is there a way to encode this action from within FrameMaker 2015?

Thanks in advance,

Adrian Cherry