[self stringByEvaluatingJavaScriptFromString:@"if ( document.getElementById('category-title') != null ) { document.getElementById('category-title').getInnerText(); }" complete:^(NSString *title) {
        dispatch_async(dispatch_get_main_queue(), ^{
            if([title length]) {
                self.navigationItem.title = title;
            } else {
                [self stringByEvaluatingJavaScriptFromString:@"if ( document.getElementById('page_title') != null ) { document.getElementById('page_title').getInnerText(); }" complete:^(NSString *title) {
                    if([title length]) {
                        self.navigationItem.title = title;
                    } else {
                        [self setDefaultNavTitle];
                    }
                }];
            }
        });
    }];