hide the output box through css

assets/css/styles.css

@@ -34,6 +34,7 @@ fieldset {
     padding: 5px;
     background: #fff;
     box-shadow: 0 1px 2px rgba(0,0,0,.3);
+	display:none;
 }
 
 .imgUrl {

assets/js/script.js

 $(document).ready(function(){
-    
-    // hide the output box first
-    $('#output').hide();
    
     // Load all the archive formats
 	loadArchiveFormats(['rar', 'zip', 'tar']);