| 摘要 |
Methods and systems are described for synchronizing second level resources with first level resources of a multi-level navigation history. In one aspect, presenting a plurality of first level resources sequentially in a widget of a browser is provided for, each resource presented in a corresponding widget of the browser along with an associated second level resource. A resource presentation history is maintained including first level resource information identifying an order of presentation of the first level resources and second level resource information identifying an order of presentation of each second level resource presented along with each resource. A previously presented first and/or second level resource identified in the resource information is provided for presenting in a widget of the browser in response to receiving a first or second level resource history request.
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