saveDoc: function(doc, options) {
          options = options || {};
          var db = this;
          var beforeSend = fullCommit(options);
          if (doc._id === undefined) {
            var method = "POST";
            var uri = this.uri;
          } else {
            var method = "PUT";
            var uri = this.uri + encodeDocId(doc._id);
          }
          var versioned = maybeApplyVersion(doc);
          $.ajax({
            type: method, url: uri + encodeOptions(options),
            contentType: "application/json",
            dataType: "json", data: toJSON(doc),
            beforeSend : beforeSend,
            complete: function(req) {
              var resp = $.parseJSON(req.responseText);
              if (req.status == 200 || req.status == 201 || req.status == 202) {
                doc._id = resp.id;
                doc._rev = resp.rev;
                if (versioned) {
                  db.openDoc(doc._id, {
                    attachPrevRev : true,
                    success : function(d) {
                      doc._attachments = d._attachments;
                      if (options.success) options.success(resp);
                    }
                  });
                } else {
                  if (options.success) options.success(resp);
                }
              } else if (options.error) {
                options.error(req.status, resp.error, resp.reason);
              } else {
                throw "The document could not be saved: " + resp.reason;
              }
            }
          });
        },