Add pureCSS Extension File

ext/B_purecss.js

@@ -0,0 +1,25 @@
+B(window).on('load',function() {
+  B('.menu-with-dropdown').on('click',function(){
+    var B_t = B(this),
+        B_sub = B(B_t.firstChild('.submenu'));
+    if(B_sub.css('visibility') == 'visible') {
+      B_sub.css({
+        'visibility':'hidden',
+        'position':'absolute',
+        'top':'-10000px',
+        'left':'-10000px'
+      });
+      B(B_t.firstChild('.fa-toggle-up')).removeClass('fa-toggle-up').addClass('fa-toggle-down');
+    } else {
+      B_sub.css({
+        'visibility':'visible',
+        'position':'relative',
+        'top':'0',
+        'left':'0',
+        'border':'1px solid #AAA',
+        'border-radius':'4px'
+      });
+      B(B_t.firstChild('.fa-toggle-down')).removeClass('fa-toggle-down').addClass('fa-toggle-up');
+    }
+  });
+});