Process custom order

<style>
 .alu-text {
   text-align: center;
 }
</style>
<h1 id="alu-wait-msg" class="alu-text">Please wait...</h1>
<h1 id="alu-error-msg" class="alu-text alert alert-danger hidden"></h1>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script>
 var _already_processing = false;
 function process_custom_order() {
   try {
     if (_already_processing) return;

     var $ = jQuery;
     var _idc = 0;
     var qs_idc = qs('idc');
     var _idcs = qs('idcs');
     var _cart_id = qs('cart') || '';
     if (_cart_id) {
       _cart_id = atob(_cart_id);
     }
     if (!_idcs) _idcs = _idc;
     if (qs_idc) _idc = qs_idc;