Can I get the referrer?

I have a website on which I dynamically create Javascript code using ASP.NET handler in which I should add the referrer to a database.

I want to get referrer of referrer like so:

• website1
• website2 (where I create pixel to another site)
• website3 (where pixel is located)

I don't have code access to website1, on website2 I can only assign JavaScript.

If I get referrer in current application state I get website2.

Is there a way to get website1 as referrer?