Parallax Scrolling – Different i mages on individual pages (within theme)

Hi all

I’m currently using a plugin called WP Display Header to specify a header image for each page individually from my custom header.

I’d really like have a parallax scrolling effect, but I don’t know how to do so for each individual theme and would appreciate any help on the matter.

It doesn’t necessarily need to be in conjunction with the plugin mentioned above.

Here’s an example of a page on my website (the banner image for each page is what I would like to scroll parallaxically – is that a word?).

I’ve been tearing my hair out over this for months so any help is graciously received!