Corrects error checking for middle name.

When and existing contact was updated it would produce an error that the
contact already existed, and a new middle name needed to be used, also when
created a contact without adding a first and/or last name the same error was
produced.  This fix corrects that bug.

js/contact.js

@@ -70,7 +70,7 @@ $(function(){
 
 				// test whether patron's name already exists
 				$.post("json/contact.php", {first_name: first_name.val(), middle_initial: middle_initial.val(), 
-													 last_name: last_name.val(), test_name: 1 }, function(data) {							 	
+													 last_name: last_name.val(), contact_id: contact_id, test_name: 1 }, function(data) {							 	
 											
 					if(data === "1") {
 						err6 = error_handler(0, last_name_error, "","*Your name already exists, please choose a different middle initial.",e);			

json/contact.php

@@ -11,15 +11,17 @@ $ssl_certificate = SSL_CERTIFICATE;
 	// test whether patron's name already exists
 	if (isset($_POST['test_name'])) {
 		
-			$query = 'SELECT first_name, middle_initial, last_name FROM contacts WHERE ' .
-						'first_name="' . $_POST['first_name'] . '" AND middle_initial="' . $_POST['middle_initial'] .  
-						'" AND last_name="' . $_POST['last_name'] . '";';
-			$sql = mysql_query($query, $YBDB) or die(mysql_error());
-			$result = mysql_fetch_assoc($sql);
-			if ( is_array($result) ) {
-				echo 1;			
-			} else {
-				echo 0;			
+			if( $_POST['contact_id'] === "new_contact" && $_POST['first_name'] && $_POST['last_name'] ) {
+				$query = 'SELECT first_name, middle_initial, last_name FROM contacts WHERE ' .
+							'first_name="' . $_POST['first_name'] . '" AND middle_initial="' . $_POST['middle_initial'] .  
+							'" AND last_name="' . $_POST['last_name'] . '";';
+				$sql = mysql_query($query, $YBDB) or die(mysql_error());
+				$result = mysql_fetch_assoc($sql);
+				if ( is_array($result) ) {
+					echo 1;			
+				} else {
+					echo 0;			
+				}
 			}
 					
 	}