function validateRegistration ( $array )
{
   var i = 0;
   var msg = '';
   for (i;i<$array.length;++i)
   {
     xname = $array[i]
     if (xname == 'lastnametitle') {msg += 'Please fill in LAST NAME, TITLE.\n';}
     if (xname == 'firstname') {msg += 'Please fill in FIRST NAME.\n';}
     if (xname == 'hospitalinstitution') {msg += 'Please fill in HOSPITAL / INSTITUTION.\n';}
     if (xname == 'email') {msg += 'Please fill in YOUR E-MAIL ADDRESS.\n';}
   }
   alert(msg);
}