If I want to add a link to the member profile so when a visitor clicks on a link it will shown this script instead of embeded into the profile page. I used this code
<a href="friends.php?u=$userinfo[userid]">$userinfo[musername]'s </a>
but it show a blank page when user even though the link turned to be
http://mydomain.com/forum/friends.php?u=1 on the address bar.