I am using tree2 component as navigator in my application. The code is as follows:

<t:tree2 id="navMenu"
value="#{NavigationTreeHandler.expandedTreeData}"
binding="#{NavigationTreeHandler.tree}"
var="node"
varNodeToggler="t"
showLines="false"
showNav="false"
showRootNode="false"
preserveToggle="false"
clientSideToggle="false">

The tree works absolutely fine , but it persists its state even after the session has ended. When a new user logs in , instead of initially showing all the nodes collapsed the tree appears in the same state as the previous user had left it. How can I solve this. Need your help urgently