checkbox button in data table - ajax

Question

i have checkbox column in datatable, i want to have some ajax code which when i click on the checbox button on the header should check all the checkbox in the rendered data rows of the datatable. I am using primefaces, they have something out of box for this but we don't want to implement it. Please let me know if there is a easy solution using ajax.
As of now we have coded as below but we can go something better than that.
<p:dataTable id="userListTable" value="#{Bean.List}"
var="user" rowClasses="odd even"
<p:column style="width:18px">
<f:facet name="header">
<p:selectBooleanCheckbox
valueChangeListener="#{Controller.toggleCheckBox}"
partialSubmit="true" immediate="true" />
</f:facet>
<p:selectBooleanCheckbox value="#{user.disable}"
disabled="#{user.disable}"
valueChangeListener="#{circleController.enableDisableOkbutton}"
partialSubmit="true" immediate="true" />
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="#{labels['circle.userList.name']}" />
</f:facet>
<p:panelGrid styleClass="noBorders">
<p:row>
<p:column rowspan="3" style="width:60px;">
<p:graphicImage
value="#{name}.jpg"
style="width:50px;height:50px" />
</p:column>
<p:column>
<h:outputText value=" " />
<h:outputText value="#{user.firstName}" />
<h:outputText value=" " />
<h:outputText value="#{user.lastName}" />
</p:column>
</p:row>
<p:row>
<h:outputText value="#{user.country}" />
</p:row>
</p:panelGrid>
</p:column>
</p:dataTable>