Java EE (Java Enterprise Edition) General Discussion

Hi Guys,

I have a data table as shown in code pasted . where the first and second column have row category which gives a categorization with a twisty.
When i click on the twisty or item name the level beneath it expands. Eerything works fine.. but i need to have to links Expand All and Collapse All which when clicked open the entire hierarchy or collapse it. Can anyone suggest a way of doing. Can it be done using javascript, I am not comfortable with java script .If someone has done this before please share the piece of code.Also please suggest the different ways of doing it. I am using RAD 7 and IBM JSF components.

	<hx:dataTableEx border="0" cellpadding="2" cellspacing="0"
	columnClasses="columnClass1" headerClass="headerClass"
	footerClass="footerClass" rowClasses="rowClass1, rowClass2" binding="#{masterPublList.tablebindData}"
	id="tableEx1" styleClass="dataTableEx" value="#{masterPublList.lst_publication}" var="varlst_publication">
		<hx:columnEx id="columnEx3">
			<hx:panelRowCategory id="rowCategory2"
				styleClass="panelRowCategory"
				value="#{varlst_publication.publCategory}" collapsed="true">

			</hx:panelRowCategory>
		</hx:columnEx>
		<hx:columnEx id="columnEx2">
			<hx:panelRowCategory id="rowCategory1"
				styleClass="panelRowCategory" value="#{varlst_publication.publSubCategory1}">
				<h:outputText id="text5" styleClass="outputText"></h:outputText>
			</hx:panelRowCategory>

		</hx:columnEx>
		<hx:columnEx id="column1">

			<hx:outputLinkEx id="linkEx1" styleClass="outputLinkEx" value="#{varlst_publication.publUrl}" target="_blank">
				<h:outputText id="text3" styleClass="outputText" value="#{varlst_publication.publName}"></h:outputText>
			</hx:outputLinkEx>

		</hx:columnEx>
		<hx:columnEx id="columnEx1">

			<h:selectManyCheckbox disabledClass="selectManyCheckbox_Disabled"
				id="checkbox1" styleClass="selectManyCheckbox" value= "#{varlst_publication.publLang}">
				<f:selectItems value= "#{masterPublList.lst_lang}"/>
			</h:selectManyCheckbox>
		</hx:columnEx>
	</hx:dataTableEx>
	

Thanks in anticipation