function ajaxRefresh()
{
    var ajax = null;
    
    ajax = LoadAjax();
        
    if ( ajax == false )
    {
        return false;
    }
    
    query_server = function ()
    {
        document.getElementById( "messageAjaxTop" ).innerHTML = "Réactualisation : Contact du serveur";
        document.getElementById( "messageAjaxTop" ).style.position = "fixed";
        document.getElementById( "messageAjaxTop" ).style.display = "block";
        
        ajax.open( "GET", ajaxRefreshURL, true );
        ajax.send( null );
        
        ajax.onreadystatechange = function()
        {
            if ( ajax.readyState == 2 )
            {
                document.getElementById( "messageAjaxTop" ).innerHTML = "Réactualisation : Serveur contacté";
            }
            else if ( ajax.readyState == 4 )
            {
                eval( ajax.responseText );
                
                document.getElementById( "messageAjaxTop" ).style.display = "none";
            }
        }
    }
    
    b = setInterval( 'query_server()', ajaxKeepAlive * 1000 );
}

if ( ajaxStatus == 1 )
{
    ajaxRefresh();
}