unable to find session value in server response

Hi,

I am unable to find session value in server response. But, I am able to see the session value being passed as a argument in next request. I searched all pages in the server response(I mean Primary page, redirection page,css page etc.). What I observed in server reposne is some function is being called to get the random session value as below:

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<input type="hidden" id="sessionStr" name="sessionStr" />

function encryptSecurityfunction() {

 var sessionStr = getSessionRandom();

var encPassword = verifyPass(req, password, sessionStr);

if (!encPassword){

return false;
  }else {

theform.sessionStr.value = sessionStr;

return true;

_____________________________________________________

Session string is being passed in loadrunner request as below:

_________________________________

web_submit_data("some name",

...

ITEMDATA,

"Name=sessionStr", "Value=some alpha numeric value ", ENDITEM,
  "Name=password", "Value=some password", ENDITEM,

LAST);

________________________________

How to resolve it?

Should I use any Javascript in the code for this?

I am using Web(Http/Hml) protocol(as C code) and will it support Java script code in it?

If I need to use Javascript, Please let me now How can I use it here.... I mean how can I capture that 'sessionstr' through code and pass it a parameter.

Thanks in advance.