htpasswd in link

i have two files: file1.php file2.php - file1 is public and file2 is password protected with htpaswd-htaccess. -in file1 i have link1 to file2. How to make link1 to acces file2 without entering username and password in htpasswd popup window? (User can acces file2 from file1, just pressing link1, and without necesity to enter user and pass). I think user and pass are parameters in link1, but i don't know sintax) tx in adv for any help adi