| 摘要 |
Systems and methods are provided for facilitating navigation of a hierarchy including a plurality of categories within a user interface. A method includes displaying a first set of categories in the hierarchy as respective graphical images along a first axis of a user interface. A reverse navigation option is also displayed along the first axis with the first set of categories. The method continues by allowing the first set of categories and the reverse navigation option to be scrolled along the first axis to place the reverse navigation option within a focus area of the user interface. In response to the reverse navigation option being placed within the focus area, the user interface displays one or more ancestor categories of the first categories as respective graphical images along a second axis of the user interface. In response to an ancestor category being selected from the second axis, the user interface replaces the first categories with second categories along the first axis. The second categories include the selected ancestor category and one or more sibling categories of the selected ancestor category.
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