function refresh(language, value){
    var text;
    if (language == 'en') text = 'loading';
    else  text = 'chargement';
    document.getElementById(value+'List').innerHTML = '<div class="loading">'+text+'</div>';
    var xhr;
    if (window.XMLHttpRequest) xhr = new XMLHttpRequest();
    else if (window.ActiveXObject) xhr = new ActiveXObject('Microsoft.XMLHTTP');
    xhr.open('POST','random-'+value+'.php',true);
    xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    xhr.send("cal_valeur="+value);
    xhr.onreadystatechange = function(){
        if (xhr.readyState == 4 && (xhr.status == 200 || xhr.status == 0)){
            document.getElementById(value+'List').innerHTML = xhr.responseText;
        }
    }
}