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We’ve all seen and become second-naturedly familiar with the typical DHTML tree-view navigation found in many existing web applications, exemplified by http://www.treeview.net/. This typical tree-view allows the user to expand and collapse nodes in a practical and familiar, but very limited manner. These traditional tree-views are used primarily for navigation around a website, whether it’s within a navigation sidebar or a site map, which hardly anybody uses. However, in today’s Web 2.0 world emphasizing dynamic and rich user interactions with web pages, the traditional 1990s rudimentary tree-view is well overdue for an upgrade.
Motivated by existing tree-view interactions, Highly Interactive Tree-view was designed to provide more interactions and direct manipulation features as well as on-the-fly editing of the tree (Screenshot shown on the right). In order to visualize the tree in more interactive way, pixel-level access to the HTML element is necessary, since we do not wa
