How do I show/hide values in my email?

$criteria = . '' . $anesthesia . '<br />';

                                              

1:

function Precruit() {
  global $mainframe;
  $db =& JFactory::getDBO(); 
// GET INFORMATION FROM THE FORM ////////////////////////////////////////////////////// 
  $pfname = $db->getEscaped($_POST['pfname'], true );
  $plname = $db->getEscaped($_POST['plname'], true);
  $paddress = $db->getEscaped($_POST['paddress'], true);
  $pcity = $db->getEscaped($_POST['pcity'], true);
  $pstate = $db->getEscaped($_POST['pstate'], true);
  $pzip = $db->getEscaped($_POST['pzip'], true);
  $pemail = $db->getEscaped($_POST['pemail'], true);
  $pphone1 = $db->getEscaped($_POST['pphone1'], true);
  $contacttime = $db->getEscaped($_POST['contacttime'], true);
  $availability = $db->getEscaped($_POST['availability'], true);
  $bcertified = $db->getEscaped($_POST['bcertified'], true);
  $beligible = $db->getEscaped($_POST['beligible'], true);
  $apm  = $db->getEscaped($_POST['apm'], true);
  $availabilitydate = date('m-d-Y', strtotime($availability)); 
  $anesthesia = $db->getEscaped($_POST['anesthesia'], true);
  $dermatology = $db->getEscaped($_POST['dermatology'], true);
  $earnosethroat = $db->getEscaped($_POST['earnosethroat'], true);
  $familymedicine = $db->getEscaped($_POST['familymedicine'], true);
  $generalsurgery = $db->getEscaped($_POST['generalsurgery'], true);
  $hospitalist  = $db->getEscaped($_POST['hospitalist'], true);
  $internalmedicine = $db->getEscaped($_POST['internalmedicine'], true);
  $obgyn = $db->getEscaped($_POST['obgyn'], true);
  $orthopedics = $db->getEscaped($_POST['orthopedics'], true);
  $pediatrics = $db->getEscaped($_POST['pediatrics'], true);
  $other  = $db->getEscaped($_POST['other'], true); 

$criteria = '' ;
if (!empty($anesthesia))
{
      $criteria = . '' . $anesthesia . '<br />';
}
if (!empty($dermatology))
{
      $criteria = . '' . $dermatology . '<br />';
}
if (!empty($earnosethroat))
{
      $criteria = . '' . $earnosethroat . '<br />';
}
if (!empty($familymedicine))
{
      $criteria = . '' . $familymedicine . '<br />';
}
if (!empty($generalsurgery))
{
      $criteria = . '' . $generalsurgery . '<br />';
}
if (!empty($hospitalist))
{
      $criteria = . '' . $hospitalist . '<br />';
}
if (!empty($internalmedicine))
{
      $criteria = . '' . $internalmedicine . '<br />';
}
if (!empty($obgyn))
{
      $criteria = . '' . $obgyn . '<br />';
}
if (!empty($orthopedics))
{
      $criteria = . '' . $orthopedics . '<br />';
}
if (!empty($pediatrics))
{
      $criteria = . '' . $pediatrics . '<br />';
}
if (!empty($other))
{
      $criteria = . '' . $other . '<br />';
} 
// GET INFORMATION FROM CONFIG TO SEND THE EMAIL /////////////////////////////////////// 
  $introList = getIntro();
  $emailto = $db->getEscaped($introList->emailto, true); 
  $from = $introList->emailfrom;
  $fromname = 'NO REPLY - Physician Recruitment Submission';
  $recipient[] = $introList->emailto; 
  $subject = 'Physician Recruitment Submitted';
  $body = '<font face=arial><p>'
         .'<b>======================================</b><br />'
         .'<b>PHYSICIAN INFORMATION</b><br />'
         .'<b>======================================</b><br />'
         .'<b>First Name:</b> ' . $pfname . '<br />'
         .'<b>Last Name:</b> ' . $plname . '<br />'
         .'<b>Address:</b> ' . $paddress . '<br />'
         .'<b>City:</b> ' . $pcity . '<br />'
         .'<b>State:</b> ' . $pstate . '<br />'
         .'<b>Zip:</b> ' . $pzip . '<br />'
         .'<b>Email:</b> ' . $pemail . '<p>'
         .'<b>Best Contact Number:</b> ' . $pphone1 . '<br />'
         .'<b>Best Contact Time:</b> ' . $contacttime .' '. $apm .'<br />'
         .'<b>Availability:</b> ' . $availabilitydate . '<br />'
         .'<b>Board Certified:</b> ' . $bcertified . '<br />'
         .'<b>Board Eligible:</b> ' . $beligible . '<br />'
         .'<b>======================================</b><br />'
         .'<b>SPECIALITIES</b><br />'
         .'<b>======================================</b><br />'
         . $criteria
         .'This is an automated email. Please do not reply to it.</font>'; 
  $mode = 1; 
  JUtility::sendMail($from, $fromname, $recipient, $subject, $body, $mode);
  $link = JRoute::_('index.php?option=com_precruit&task=sent'); 
  $mainframe->redirect($link);
}

                                              

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:
72:
73:
74:
75:
76:
77:
78:
79:
80:
81:
82:
83:
84:
85:
86:
87:
88:
89:
90:
91:
92:
93:
94:
95:
96:
97:
98:
99:
100:
101:
102:
103:
104:
105:
106:
107:
108:
109:
110:
111:
112:
113:
114:
115:
116:
117:
118:
119: