I fixed the error about cookies.
But know i have different problem:
I form on the page that has action post to asp file that is validating all the entered information. Now when there is an error it goes back to form page and displays an error msg but all the data i entered before submition is gone and all the fields are empty.
How can keep whatever is entered at the first time and then when they click send and smeone is redirected back to original page all the fields have info from before ??