jwplayer cache issue

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
<script src="http://jwpsrv.com/library/YkmIaFB5EeOiHBIxOQfUww.js"></script>
<script src="http://p.jwpcdn.com/6/8/jwpsrv.js"></script>
<script src="http://p.jwpcdn.com/6/8/jwplayer.html5.js"></script>
<button id = "show_jwplayer">SHOW JWPLAYER</button><button id = "remove_jwplayer"> REMOVE JWPLAYER </button>

    <div id="container"></div>

JavaScript

$(document).ready(function(){     

      $("#show_jwplayer").click(function() { 
        videoSetup();
    });
     $("#remove_jwplayer").click(function() { 
        removeVideo();
    });
    
  
    function videoSetup(){
        
        jwplayer("container").setup({
            file :"http://video-js.zencoder.com/oceans-clip.mp4",
            primary : "html5",
            width :"100%",
            aspectratio: "16:9",
            controls:true,
            autostart : true
        });
    }
    
    
    function removeVideo(){
        var jw_mode = jwplayer('container').getRenderingMode();
    if($('#container').length){
       if( (jw_mode == 'html5') || (jw_mode == 'flash')) {
                alert("it works")
               //remove jwplayer from DOM
                 jwplayer(container).remove();
       } 
    }
   
        jwplayer('container').remove();
    }
   
});