setAjaxDiv("right");
setGoogleAnalyticsID("UA-4418450-6");


function showPane( vn_id ) {

    document.getElementById("pane1").style.display="none";
    document.getElementById("pane2").style.display="none";
    document.getElementById("pane3").style.display="none";
    document.getElementById("pane4").style.display="none";

    document.getElementById("pane" + vn_id).style.display="block";
}