Fixed calendar using backwards compatibility hack in global scope

calendar.js

@@ -1,3 +1,6 @@
+YUI().use('yui2-container', 'yui2-calendar', function(Y) {
+    var YAHOO = Y.YUI2;
+
     document.body.className += ' yui-skin-sam';
 
     YAHOO.util.Event.onDOMReady(function(){
@@ -94,3 +97,5 @@ YAHOO.util.Event.onDOMReady(function(){
             dialog.show();
         });
     });
+});
+

renderer.php

@@ -106,8 +106,6 @@ class mod_attforblock_renderer extends plugin_renderer_base {
                     'cal_cur_date'  => $fcontrols->curdate);
             $curdate_controls = html_writer::script(js_writer::set_variable('M.attforblock', $jsvals));
 
-            //$this->page->requires->yui2_lib('container');
-            //$this->page->requires->yui2_lib('calendar');
             $this->page->requires->js('/mod/attforblock/calendar.js');
 
             $curdate_controls .= html_writer::link($fcontrols->url(array('curdate' => $fcontrols->prevcur)), $this->output->larrow());