If the treeview content is defined in the menu repository and if the content is big enough (more than 50 items by default) only the main nodes will be loaded. A server request will be made automatically to the struts-layout '/treeview' action to load the other nodes when required. The treeview action must be defined in struts-config.xml with the following attributes:
* path="/treeview"
* type="fr.improve.struts.taglib.layout.treeview.TreeviewAction"
If an image is associated to an item having subitems, clicking on the image will open or close all the subitems.
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