Getting cookie from external script

[keanu]

Hello,

 

I have an external script which looks at a URL if it contains a special parameter (for example www.somesite.com/product1?ref=prisjakt) in which ?ref=prisjakt is the parameter. If the URL contains this ref, this script sets a cookie. Then in the order confirmation page I need to get this cookie. 

 

Link to the scrip:  http://instore.prisjakt.nu/in.js

 

In order-confirmation.tpl, how can I get the cookie from this script? Because when I write {$cookie->pjref} i get no value at all.

Do I need to call 

function _instore_get_cookie(name)

from the script? The problem is I don't know how ... 

 

I appreaciate any help.