Cookies in the current page can be extract using Javascript using ‘document.cookies’ which returns a ‘;’ separated String of all the current cookie values.
You can parse the values with some script like this:
function getCookie(name) {
var result = '';
var cookies = document.cookie.split(';');
for ( var i = 0; i < cookies.length; i++) {
//alert(cookies[i]);
var cookie = cookies[i].split('=');
if (cookie[0].replace(/^s+|s+$/g, '') == name)
result = cookie[1];
}
return result;
}