Javascript Vendor Libraries Reference by Content Delivery Network (CDN) with local fallback

reference.html

<!-- JQUERY -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="/js/vendor/jquery-2.0.3.min.js"><\x3C/script>')</script>

<!-- JQUERY UI -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script>window.jQuery.ui || document.write('<script src="/js/vendor/jquery.ui-1.10.3.min.js"><\x3C/script>')</script>

<!-- JQUERY VALIDATE -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.11.1/jquery.validate.min.js"></script>
<script>window.jQuery.validator || document.write('<script src="/js/vendor/jquery.validate-1.11.1.min.js"><\x3C/script>')</script>

<!-- JQUERY COOKIE -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.3.1/jquery.cookie.min.js"></script>
<script>$.cookie || document.write('<script src="/js/vendor/jquery.cookie-1.3.1.min.js"><\x3C/script>')</script>

<!-- MODERNIZER -->
<script src="//cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
<script>window.Modernizr || document.write('<script src="/js/vendor/modernizr-2.6.2.min.js"><\x3C/script>')</script>

<!-- LESS CSS -->
<script src="//cdnjs.cloudflare.com/ajax/libs/less.js/1.4.1/less.min.js"></script>
<script>window.less || document.write('<script src="js/vendor/less-1.4.1.min.js"><\x3C/script>')</script>

<!-- SELECTIVIZR -->
<!--[if (gte IE 6)&(lte IE 8)]>
    <script src="//cdnjs.cloudflare.com/ajax/libs/selectivizr/1.0.2/selectivizr-min.js"></script>
    <noscript><link rel="stylesheet" href="css/msie.css" /></noscript>
<![endif]-->

<!-- TWITTER BOOTSTRAP -->
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script>$.fn.modal || document.write('<script src="/js/vendor/bootstrap-3.0.0.min.js"><\x3C/script>')</script>

<!-- CKEDITOR -->
<script src="//cdnjs.cloudflare.com/ajax/libs/ckeditor/4.2/ckeditor.js"></script>
<script>window.CKEDITOR || document.write('<script src="/js/vendor/ckeditor/ckeditor.js"><\x3C/script>')</script>