when I am using tool tip in rich:tree i am geeting the js error

[ravuri.ravindrababu]

The following message I am getting with tool tip

please help me to solve this problem

Message: 'this.toolTip' is null or not an object

Line: 9757

Char: 1

Code: 0

URI: http://localhost:8080/Versions/a4j/g/3_2_2.SR1/org/richfaces/ui.pack.js

Sample code is like this:

<a:outputPanel id="treeOP">

<rich:tree id="seriesTreeId2"

value="#{aTree.treeNode}"

var="item"

ajaxKeys="#{null}"

nodeSelectListener="#{aTree.processSelection}"

changeExpandListener="#{aTree.processExpansion}"

stateAdvisor="#{productTreeStateAdvisor}"

switchType="ajax"

icon="/resources/images/video_sm.jpg"

iconLeaf="/resources/images/video_sm.jpg"

showConnectingLines="true"

ajaxSubmitSelection="true"

adviseNodeOpened="#{productTreeStateAdvisor.adviseNodeOpened}"

adviseNodeSelected="#{productTreeStateAdvisor.adviseNodeSelected}"

ajaxChildActivationEncodeBehavior="none"

>

<rich:treeNode icon="/resources/images/video_sm.jpg" id="sampleNode"

selectedClass="selectedTreeNode"

ajaxChildActivationEncodeBehavior="none">

<h:outputText value="#{item.productDisplayName}"/>

<rich:toolTip for="sampleNode" ajaxChildActivationEncodeBehavior="none"

ajaxNodeSelectionEncodeBehavior="none">

Test data

</rich:toolTip>

</rich:treeNode>

</rich:tree>

</a:region>

</a:outputPanel>