How to see the HTTP_REFERER?

[Anon]

I have a problem...

I have a site that should check where the visitors come from, ie. on which page they click links to get to my site.

However, if these links are opened in a new window, the HTTP_REFERER is empty. I thought it might be because the history is not copied but using a (Javascript) window.open function with "copyhistory=yes" it still doesn't give me any HTTP_REFERERs.

Any suggestions?

[Anon]

Okay... just found the problem. Somehow a javascript window.open function does not pass on the referer. So I used target="_blank" instead and it works fine now. 8-)