在firefox或chrome中单击一下“全部折叠”所有节点

Any way to "collapse all" all nodes in one click in firefox or chrome and then able to search a node's name and then quickly see its path/tree of parent nodes? First collapse not just top node, but all child nodes, and when I search for a node then it opens only that tree of nodes. I want this because I search a node in a big xml file. The node is present many times under different paths of parent nodes and I need to see the path of the node where ever it appears. Right now I have to manually traverse whole file and collapse many times to find all paths of that node that is present many times in a file. Any quick way of doing it?Any way to "collapse all" all nodes in one clic