[Javascript] AJAX + Cookies

[Philip Thompson]

Hi all.

I've been hitting my head against the wall for a while now. I've  
gotten a few hits from Google, but nothing has really answered my  
question:

After updating the value of a cookie during an AJAX request, can that  
value be immediately accessed via the cookie (w/o a new request)?

[js]
alert(readCookie('mycookie'));
updateCookie('mycookie', 'newValue');
alert(readCookie('mycookie'));
[/js]

The output for this *should* be:

oldValue
newValue

However, I'm getting:

oldValue
oldValue

Now, I'm making the request via PHP. I'm echo'ing the javascript to  
update the cookie. I know this can be set in PHP via the setcookie()  
function, but the new value of the cookie is unavailable until the  
next request. Well, I'm greedy and I want it now!

Any thoughts? Is this possible to have that cookie accessible when  
immediately set/same request?

Thanks,
~Philip