Changed more data parameters around, hopefully works this time

index.php

@@ -12,7 +12,7 @@ $(document).ready(function() {
       $.ajax({
        type: 'POST',
        url: 'servertime.php',
-       data: { server: ru-general },
+       data: { 'server': 'ru_general' },
        timeout: 1000,
        success: function(data) {
           $("#timer").html(data); 

servertime.php

@@ -13,7 +13,7 @@ echo '<br>';
 echo $data['server'];
 
 // If client requested datetime for Rocknarok Universe (General Timezone).
-if ($data['server'] == 'ru-general') {
+if ($data['server'] == 'ru_general') {
 
 // Set current datetime of Rocknarok Universe.
 $rutime=date_create();