I want to get all the key from the root node, I tried many possible option but was unlucky.

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var rootNode = $("#tree").dynatree("getRoot");
            var child = rootNode.childList;
            alert(child.length);
This return me one. I want all of parents + children key.

I require this because in my page content I have links, which in turn points to some page in the tree. So as soon as user clicks on certain link, I want to open the related node and make that child as  selected.