How can I read the current headers without making a new request with JS? [duplicate]

Possible Duplicate:
Accessing HTTP Headers in Javascript?

The only way what i know to read with javascript the current headers is:

var req = new XMLHttpRequest();
req.open('GET', document.location, false);
req.send(null);
var headers = req.getAllResponseHeaders().toLowerCase();

But i don't want make a new request, i want read the current headers.

Is this posible? Thanks!

Solution 1:

It's not possible to access page headers via Javascript, without sending ajax request.