A resource manager for a network application, such as an application defined in a Web-browser, is provided. The manager requests resources, the resource type and a priority defined for the resource in the application. The manager is provided in a computer-readable medium having computer-executable instructions causing a computer to implement certain steps. These may include the steps of: interpreting resource requests from the Web browser based on resources required by a page; and issuing resource requests based on a user specified priority. The steps of interpreting and issuing may occur for all requests to a given domain.