Enable the options menu

Author: rozza

docs/reference/static/js/java.js

@@ -9,4 +9,15 @@ jQuery(document).ready(function(){
       $('.gradle').removeClass('hidden');
     }
   });
+
+  jQuery.getJSON(DOCUMENTATION_OPTIONS.URL_ROOT + "/../versions.json").done(function( data ) {
+
+    $.each(data, function( index, value ) {
+      var versionUrl = "//mongodb.github.io/mongo-java-driver/" + value.version;
+      var liClass = DOCUMENTATION_OPTIONS.VERSION ==  value.version ? ' class="active"' : '';
+      jQuery("#optionsVersionsMenu").append('<li'+liClass+'><a href="'+ versionUrl +'" data-path="manual">'+ value.version +'</a></li>');
+    });
+
+    jQuery("#optionsVersionsPopup").removeClass("hidden");
+  });
 });