<?php
 
 class Asyncronous{
 
     private $css;
     private $javascript;
 
     public function __construct()
     {
         $this->css = "";
         $this->javascript = "";
     }
 
     public function addCss($code){
         $this->css .= "\n";
         $this->css .= $code;
     }
 
     public function addJs($code){
         $this->javascript .= "\n";
         $this->javascript .= $code;
     }
 
     public function printCss(){
         echo $this->css;
     }
 
     public function printJs(){
         echo $this->javascript;
     }
 
 }