function setCookie(name, value) {
expire = new Date('january 1, 2100');
document.cookie = name + "=" + escape(value) + ";expires=" + expire.toGMTString();
}
<?
include("../connect.phtml");
$thesql = "
CREATE TABLE vislog (
   id int(11) NOT NULL auto_increment,
   pagetitle char(200) ,
   referer char(200) ,
   ip char(20) ,
   visitdate datetime,
   browser char(200) ,
   PRIMARY KEY (id)
)";
@mysql_query($thesql);
$thesql = "ALTER TABLE vislog ADD useruid CHAR (20) not null";
@mysql_query($thesql);
if (!$useruid){
 srand((double) microtime() * 1000000);
 $useruid = md5(uniqid(rand()));
 echo "\nsetCookie('useruid','$useruid')";
}

$thesql = "insert into vislog (pagetitle,referer,ip,visitdate,browser,useruid) values ('$REQUEST_URI','$HTTP_REFERER','$REMOTE_ADDR',now(''),'$HTTP_USER_AGENT','$useruid')";
mysql_query($thesql);


?>