diff --git a/enrol/authorize/ccval.php b/enrol/authorize/ccval.php
index 7f16aba2c81..26ebda999fc 100644
--- a/enrol/authorize/ccval.php
+++ b/enrol/authorize/ccval.php
@@ -1,128 +1,126 @@
 <?php // $Id$
 /************************************************************************
- *
- * CCVal - Credit Card Validation function.
- *
- * Copyright (c) 1999, 2003 Holotech Enterprises. All rights reserved.
- * You may freely modify and use this function for your own purposes. You
- * may freely distribute it, without modification and with this notice
- * and entire header intact.
- *
- * This function accepts a credit card number and, optionally, a code for
- * a credit card name. If a Name code is specified, the number is checked
- * against card-specific criteria, then validated with the Luhn Mod 10
- * formula. Otherwise it is only checked against the formula. Valid name
- * codes are:
- *
- *    mcd - Master Card
- *    vis - Visa
- *    amx - American Express
- *    dsc - Discover
- *    dnc - Diners Club
- *    jcb - JCB
- *    swi - Switch
- *    dlt - Delta
- *    enr - EnRoute
- *
- * You can also optionally specify an expiration date in the formay mmyy.
- * If the validation fails on the date, the function returns 0. If it
- * fails on the number validation, it returns false.
- *
- * A description of the criteria used in this function can be found at
- * http://www.paylib.net/ccval.html. If you have any questions or
- * comments, please direct them to ccval@holotech.net
- *
- *                                          Alan Little
- *                                          Holotech Enterprises
- *                                          http://www.holotech.net/
- *                                          August 2003
- *
- ************************************************************************/
+*
+* CCVal - Credit Card Validation function.
+*
+* Copyright (c) 1999, 2003 Holotech Enterprises. All rights reserved.
+* You may freely modify and use this function for your own purposes. You
+* may freely distribute it, without modification and with this notice
+* and entire header intact.
+*
+* This function accepts a credit card number and, optionally, a code for
+* a credit card name. If a Name code is specified, the number is checked
+* against card-specific criteria, then validated with the Luhn Mod 10
+* formula. Otherwise it is only checked against the formula. Valid name
+* codes are:
+*
+*    mcd - Master Card
+*    vis - Visa
+*    amx - American Express
+*    dsc - Discover
+*    dnc - Diners Club
+*    jcb - JCB
+*    swi - Switch
+*    dlt - Delta
+*    enr - EnRoute
+*
+* You can also optionally specify an expiration date in the formay mmyy.
+* If the validation fails on the date, the function returns 0. If it
+* fails on the number validation, it returns false.
+*
+* A description of the criteria used in this function can be found at
+* http://www.paylib.net/ccval.html. If you have any questions or
+* comments, please direct them to ccval@holotech.net
+*
+*                                          Alan Little
+*                                          Holotech Enterprises
+*                                          http://www.holotech.net/
+*                                          August 2003
+*
+************************************************************************/
 
-  function CCVal($Num, $Name = "n/a", $Exp = "") {
-
-//  Check the expiration date first
-    if (strlen($Exp)) {
-      $Month = substr($Exp, 0, 2);
-      $Year  = substr($Exp, -2);
-
-      $WorkDate = "$Month/01/$Year";
-      $WorkDate = strtotime($WorkDate);
-      $LastDay  = date("t", $WorkDate);
-
-      $Expires  = strtotime("$Month/$LastDay/$Year 11:59:59");
-      if ($Expires < time()) return 0;
+function CCVal($Num, $Name = "n/a", $Exp = "")
+{
+    // Check the expiration date first
+    if (strlen($Exp))
+    {
+        $Month = substr($Exp, 0, 2);
+        $Year  = substr($Exp, -2);
+        $WorkDate = "$Month/01/$Year";
+        $WorkDate = strtotime($WorkDate);
+        $LastDay  = date("t", $WorkDate);
+        $Expires  = strtotime("$Month/$LastDay/$Year 11:59:59");
+        if ($Expires < time()) return 0;
     }
 
-//  Innocent until proven guilty
+    //  Innocent until proven guilty
     $GoodCard = true;
 
-//  Get rid of any non-digits
+    //  Get rid of any non-digits
     $Num = ereg_replace("[^0-9]", "", $Num);
 
-//  Perform card-specific checks, if applicable
-    switch ($Name) {
+    // Perform card-specific checks, if applicable
+    switch ($Name)
+    {
+        case "mcd" :
+        $GoodCard = ereg("^5[1-5].{14}$", $Num);
+        break;
 
-    case "mcd" :
-      $GoodCard = ereg("^5[1-5].{14}$", $Num);
-      break;
+        case "vis" :
+        $GoodCard = ereg("^4.{15}$|^4.{12}$", $Num);
+        break;
 
-    case "vis" :
-      $GoodCard = ereg("^4.{15}$|^4.{12}$", $Num);
-      break;
+        case "amx" :
+        $GoodCard = ereg("^3[47].{13}$", $Num);
+        break;
 
-    case "amx" :
-      $GoodCard = ereg("^3[47].{13}$", $Num);
-      break;
+        case "dsc" :
+        $GoodCard = ereg("^6011.{12}$", $Num);
+        break;
 
-    case "dsc" :
-      $GoodCard = ereg("^6011.{12}$", $Num);
-      break;
+        case "dnc" :
+        $GoodCard = ereg("^30[0-5].{11}$|^3[68].{12}$", $Num);
+        break;
 
-    case "dnc" :
-      $GoodCard = ereg("^30[0-5].{11}$|^3[68].{12}$", $Num);
-      break;
+        case "jcb" :
+        $GoodCard = ereg("^3.{15}$|^2131|1800.{11}$", $Num);
+        break;
 
-    case "jcb" :
-      $GoodCard = ereg("^3.{15}$|^2131|1800.{11}$", $Num);
-      break;
-  
-    case "dlt" :
-      $GoodCard = ereg("^4.{15}$", $Num);
-      break;
+        case "dlt" :
+        $GoodCard = ereg("^4.{15}$", $Num);
+        break;
 
-    case "swi" :
-      $GoodCard = ereg("^[456].{15}$|^[456].{17,18}$", $Num);
-      break;
+        case "swi" :
+        $GoodCard = ereg("^[456].{15}$|^[456].{17,18}$", $Num);
+        break;
 
-    case "enr" :
-      $GoodCard = ereg("^2014.{11}$|^2149.{11}$", $Num);
-      break;
+        case "enr" :
+        $GoodCard = ereg("^2014.{11}$|^2149.{11}$", $Num);
+        break;
     }
 
-//  The Luhn formula works right to left, so reverse the number.
+    // The Luhn formula works right to left, so reverse the number.
     $Num = strrev($Num);
-
     $Total = 0;
 
-    for ($x=0; $x<strlen($Num); $x++) {
-      $digit = substr($Num,$x,1);
+    for ($x=0; $x < strlen($Num); $x++)
+    {
+        $digit = substr($Num, $x, 1);
 
-//    If it's an odd digit, double it
-      if ($x/2 != floor($x/2)) {
-        $digit *= 2;
+        // If it's an odd digit, double it
+        if ($x/2 != floor($x/2)) {
+            $digit *= 2;
 
-//    If the result is two digits, add them
-        if (strlen($digit) == 2)
-          $digit = substr($digit,0,1) + substr($digit,1,1);
-      }
-
-//    Add the current digit, doubled and added if applicable, to the Total
-      $Total += $digit;
+            // If the result is two digits, add them
+            if (strlen($digit) == 2)
+                $digit = substr($digit, 0, 1) + substr($digit, 1, 1);
+        }
+        // Add the current digit, doubled and added if applicable, to the Total
+        $Total += $digit;
     }
 
-//  If it passed (or bypassed) the card-specific check and the Total is
-//  evenly divisible by 10, it's cool!
-    if ($GoodCard && $Total % 10 == 0) return true; else return false;
-  }
-?>
\ No newline at end of file
+    // If it passed (or bypassed) the card-specific check and the Total is
+    // evenly divisible by 10, it's cool!
+    return ($GoodCard && $Total % 10 == 0);
+}
+?>