Code:
	
	////////////////////
else if($action=="thank")
{
  $thank= mysql_real_escape_string( $_REQUEST["thank"] );
  
  $who = mysql_real_escape_string( $_REQUEST["who"] );
   addonline(getuid_sid($sid),"thanking a member","");
if ($uid==$who)
{
      echo "<head>";
      echo "<title>$sitename</title>";
      echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../themes/$theme[0]\">";
      echo "</head>";
      echo "<body>";
      echo "<p align=\"center\">";
      echo "You Cant thank yourself silly <br/>";
      echo "</p></body></html>";
      exit();
}
  
      echo "<head>";
      echo "<title>$sitename</title>";
      echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../themes/$theme[0]\">";
      echo "</head>";
      echo "<body>";
       echo "<p align=\"center\">";
    $tha = mysql_fetch_array(mysql_query("SELECT thank FROM dave_users WHERE id='".$uid."'"));
    $tha = $tha[0]+1;
    mysql_query("UPDATE dave_users SET thank='".$tha."' WHERE id='".$uid."'");
  if($res)
   {
        echo "<img src=\"../images/ok.gif\" alt=\"o\"/> thanked successfully<br/>";
   }else {
        echo "<img src=\"../images/notok.gif\" alt=\"x\"/>You have thanked this user before<br/>";
   }
  echo "<br/><br/>";
  echo "<b>0 </b><a accesskey=\"0\" href=\"index.php?action=main&sid=$sid\"><img src=\"../images/home.gif\" alt=\"\"/>Home</a>";
  echo "</p></body>";
  }
prob something simple but am shattered .

Comment