Datascrolling in table content

[kishan]

hi,
Grid data scroller is not working.

<t:dataScroller id="scroller" renderFacetsIfSinglePage="false"
firstRowIndexVar="firstRowIndexVar" lastRowIndexVar="lastRowIndexVar" 
pageCountVar="pageCount" pageIndexVar="pageIndex" rowsCountVar="rowsCount" for="dt1" paginator="true" paginatorMaxPages="5" paginatorColumnStyle="font-family: verdana, arial, helvetica, geneva, sans serif;font-size: 11px"
paginatorActiveColumnStyle="font-family: verdana, arial, helvetica, geneva, sans serif;font-size: 20px;font-weight:bold;" immediate="true">
								<f:facet name="first" >
									<t:graphicImage url="images/pg-first.gif" title="First" border="0" />
								</f:facet>
								<f:facet name="last">
									<t:graphicImage url="images/pg-last.gif" title="Last" border="0" />
								</f:facet>
								<f:facet name="previous">
									<t:graphicImage url="images/pg-prev.gif" title="Previous" border="0" />
								</f:facet>
								<f:facet name="next">
									<t:graphicImage url="images/pg-next.gif" title="Next" border="0" />
								</f:facet>
							</t:dataScroller>  
							
							
							
							<t:dataTable id="dt1"  rowIndexVar ="rowIndex"
							value="#{ProjectBean.gridData}" headerClass="GridHeaderFont GridHeaderBGColor DataPadding Center"  rowClasses="GriddataFont DataPadding ResultsDataRowColor,GriddataFont DataPadding ResultsDataRowAlternateColor" var="oneRow" border="0" cellpadding="0" cellspacing="1" first="0" rows="10" width="100%" dir="LTR" frame="hsides" rules="all" sortable="true"
                preserveSort="true" >
							> 
						        
						        <t:columns value="#{ProjectBean.gridHeaderData}" id="rowIndex" var="oneColumn"> 
						        	 <f:facet name="header">
						        	 	<t:commandSortHeader columnName="#{oneColumn}" arrow="false" immediate="false">
						        	  		<h:outputText value="#{oneColumn}" />
						        	 	</t:commandSortHeader> 
						             </f:facet>
						            <t:outputText value="#{ProjectBean.columnValue}" />  
						        </t:columns>  
						    </t:dataTable>