html i mail

jeg har dette script:

<?php
function check_php_version($version)

{

  global $adminEmailAddr;



  // intval used for version like "4.0.4pl1"

  $testVer=intval(str_replace(".", "",$version));

  $curVer=intval(str_replace(".", "",phpversion()));

  if( $curVer < $testVer )

    return false;

  return true;

}



  // Users are stored in a string

  $users = "";



  $subject = $_POST["SUBJECT"];

  $body = $_POST["BODY"];



  // Get all the users.

  $link = OpenConnection();



  $query = "select username, email from $dbaseUserData";

  $result = mysql_query($query)

    or die("Unable to perform query: $query");



  // Only versions of PHP over 4.3 support BCC.

  if (check_php_version('4.3')) {

    while ($line = mysql_fetch_array($result)) {

      $users = $line["email"].", $users";

    }



    // Send the email

    if (@mail($adminEmailAddr,$subject,$body,

          "From: $adminEmailAddr\r\n"

          ."Reply-To: $adminEmailAddr\r\n"

          ."Bcc: $users") == FALSE) {

      LogMsg("Unable to send BCC email from $adminEmailAddr, to $users subject: $subject<br>$body");

    }

  } else {

    // Send as individual emails.

    while ($line = mysql_fetch_array($result)) {

      $user = $line["email"];

      if (FALSE == @mail($user,$subject,$body,

          "From: $adminEmailAddr\r\n"

          ."Reply-To: $adminEmailAddr\r\n")) {

        LogMsg("Unable to send email to single user from $adminEmailAddr, to $user subject: $subject<br>$body");

      }

    }

  }



  CloseConnection($link);

  forward("PredictionIndex.php");

?>
hvordan skriver jeg det så man kan sende html i mails ?