var http_zadost = false;
if (window.XMLHttpRequest) { // Mozilla, Safari, Opera, Konqueror, ...
    http_zadost = new XMLHttpRequest();
} else if (window.ActiveXObject) { // Internet Explorer
    http_zadost = new ActiveXObject("Microsoft.XMLHTTP");
}
function hlasuj(idcko) {
    if(http_zadost) {
        http_zadost.open("POST", '../administration/ajax-responses/anketa.php', true);
        http_zadost.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        http_zadost.send("hlas=" + idcko);
        http_zadost.onreadystatechange = function () {
            if ((http_zadost.readyState == 4) && (http_zadost.status == 200)) {
		if (http_zadost.responseText == 'hlasovano') {window.alert('Již jste hlasovali.');} else {document.getElementById('anketa').innerHTML = http_zadost.responseText;}
            }
        };
    }
}