jQuery and php includes for an image slider - php

I am trying to use an image slider like anything slider. When I place all the contents on the same file it works without a glitch, but when I separate the code into the header include, footer include and then the file itself it no longer works.
I checked my file paths and all seems to be correct and I run into the same issue when I use other image sliders. Not sure how to resolve the issue.
Thanks for your help

Try a developper console to obtain some debug information (Press 'F12' on chrome or install the firebug extension on Firefox).
There should be a "Network" tab that shows what requests are made from the page.
And a "JS console" that may reveal some JS errors.
Maybe it will help you understand what is happening.
Don't hesitate to post results here, and a link to your page.

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