Reading a session variable from img before post data

[bigi]

Hello,
How can I read a child session from a parent before form post data ?

My problem is about an img tag which read a captcha file from a php file. in that php file it creates $SESSION["test"] .
When I write a javascript code to read the $SESSION["test"] when the user click in the document where this image laid on, I get the previous value of the session.
for example if at the moment the real value of this session becomes 8 and the previous value of this was 5, when the user click on document it shows 5.
Is there any solution to get this value before form action trigger?
Thx

[WeAnswer_IT]

JavaScript can change cookies, but it CANNOT change session variables.

Session variables are values stored on your server. The server then gives the user a cookie, so that it knows who the user is. When it recognizes a user, it looks up the values of that user's session.

The way you wrote your question was very, very confusing, but if I understood you correctly, it is not possible to directly do what you are asking.