<CSP:CLASS SUPER="MyApp.MyPage" /> 

<CSP:CLASS SUPER="MyApp.Template" /> 
...
<server>d ..wHeader()</server>
<div><!-- do something --></div>
<server>d ..wFooter()</server>
...

<script language="cache" runat="compiler">
  d %compiler.Set("%cspclass.SUPER","%CSP.Page,MyApp.Template")
</script>

Class MyApp.Template Extends %CSP.Page [ ProcedureBlock ] {
 ClassMethod wHeader(ByRef args as %String="") as %Status {
	w "<div><h1>Header</h1></div>"	Q $$$OK	
 }
 ClassMethod wFooter(ByRef args as %String="") as %Status {
	w "<div><h1>Footer</h1></div>"	Q $$$OK	
 }
}

<csp:include>

<!--#include virtual="/adm/inc/mainhead.csp"-->

#server(...)#

Class csp.anyFunction Extends %CSP.Page {
 ClassMethod OnPage() As %Status {
  s class=$G(%request.Data("class")),method=$G(%request.Data("method"))
  ;!!!ПРОВЕРКИ!!!, например Q:'##class(%Dictionary.CompiledClass).%ExistsId(class) $$$OK и т.д
  m args=%request.Data ;
  d $zobjclassmethod(class,method,args) ;или write 
  Quit $$$OK
 }

<script src="js/jQuery-1.3.2.min.js" type="text/javacript"/><!--write less, do more - есть версия 1.4-->
<script type="text/javascript">
  function btnClick(e){
      var result = $.ajax({
      url: "csp.anyFunction.cls"  //вызов посредника
      ,type: "POST"
      ,data: ({id : this.getAttribute('id')})
      ,dataType: "html",  
     }).responseText;
     //делаем что-нибудь с переменной на клиенте 
     $("#serverResponse").text(result); //например выводим в элемент с id=serverResponse
  }
</script>

<script type="text/javascript">
 ....
 ,data: {id : this.getAttribute('id'),class:"MyDog",method:"GetDogTaxTips "}
 ...
</script>