move function load_script to separate file

klib/load_script.js

@@ -0,0 +1,16 @@
+//from http://stackoverflow.com/questions/950087/how-to-include-a-javascript-file-in-another-javascript-file
+var loadScript = function(url, callback) {
+	// Adding the script tag to the head as suggested before
+	var head = document.getElementsByTagName('head')[0];
+	var script = document.createElement('script');
+	script.type = 'text/javascript';
+	script.src = url;
+
+	// Then bind the event to the callback function.
+	// There are several events for cross browser compatibility.
+	script.onreadystatechange = callback;
+	script.onload = callback;
+
+	// Fire the loading
+	head.appendChild(script);
+};

kubos_boxes.html

@@ -7,28 +7,12 @@
 	    <script type="text/javascript" src="lib/jquery-2.1.1.min.js"></script>
         <script type="text/javascript" src="lib/Detector.js"></script>
         <script type="text/javascript" src="klib/setStyle.js"></script>
+        <script type="text/javascript" src="klib/load_script.js"></script>
 		<script>
 			"use strict";
 
 			// generic helper functions
 
-			//from http://stackoverflow.com/questions/950087/how-to-include-a-javascript-file-in-another-javascript-file
-			var loadScript = function(url, callback) {
-				// Adding the script tag to the head as suggested before
-				var head = document.getElementsByTagName('head')[0];
-				var script = document.createElement('script');
-				script.type = 'text/javascript';
-				script.src = url;
-
-				// Then bind the event to the callback function.
-				// There are several events for cross browser compatibility.
-				script.onreadystatechange = callback;
-				script.onload = callback;
-
-				// Fire the loading
-				head.appendChild(script);
-			};
-
 			var createButton = function(text, onclick) {
 				var button = document.createElement('button');
 				setStyle(button, {