function ajax(s_divId,s_controllerFile,s_vars){
    //alert(s_divId+'\n'+s_controllerFile+'\n'+s_vars);
    $.ajax({
        type: "POST",
        url: s_controllerFile,
        data: 'fromAjax=y'+s_vars,
        dataType: "html",
        success: function(s_html){
            //alert(s_html);
            $('#'+s_divId).html(s_html);
            if(s_divId == 'mainContent'){
                menuSet();
                content_default2();
            }
        },
        error:function (xhr, ajaxOptions, thrownError){
            $('#'+s_divId).html('Error : '+xhr.status+'<br />'+thrownError);
        }
    });
}