function doBasketItems()
{
    jsonrpc = new JSONRpcClient("/Jsp/JSON-RPC");
    jsonrpc.pageServices.getNumBasketItems(doNumBasketItems);
}
function doNumBasketItems(result, exception) {
    if(exception) {alert(exception.message);}
   var numItems = result;
   // set in HTML
   if (document.getElementById("numBasketItems")) {
        document.getElementById("numBasketItems").innerHTML = numItems;
   }
}