var xmlHttp;

function zobraz_vysledek() {
    var anketa_div = document.getElementById("obal");
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        var newDiv = document.createElement("div");
		newDiv.innerHTML = xmlHttp.responseText;
        if (anketa_div.firstChild != null)
			anketa_div.removeChild(anketa_div.firstChild);
		anketa_div.appendChild(newDiv);
 	}
}

function vytvorXMLHttpObject() {
	var xmlHttp = null;
	if (window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if (window.XMLHttpRequest) {
		xmlHttp = new XMLHttpRequest();
	}
	return xmlHttp;
}

function vysledky(root){
    xmlHttp = vytvorXMLHttpObject();
	if (xmlHttp != null) {
        var path = root+"include/anketa.php";
        path += "?zobraz=vysledky";
		xmlHttp.open("GET", path);
		xmlHttp.onreadystatechange = zobraz_vysledek;
		xmlHttp.send(null);
	}
    return false;
}

function hlasovani(root){
    xmlHttp = vytvorXMLHttpObject();
	if (xmlHttp != null) {
        var path = root+"include/anketa.php";
        path += "?zobraz=hlasovani";
		xmlHttp.open("GET", path);
		xmlHttp.onreadystatechange = zobraz_vysledek;
		xmlHttp.send(null);
	}
    return false;
}

function hlasuj(name,root,odpoved) {
    var i;
    if (name!="" && odpoved==""){
        for (i=0;i<document.forms[name].length-1;i++){
            if (document.forms[name][i].checked == true){
                odpoved = document.forms[name][i].id;
            }
        }
        if (!odpoved){
            alert("Musíte zvolit odpověď.");
            return false;
        }
    }
    xmlHttp = vytvorXMLHttpObject();
	if (xmlHttp != null) {
        var path = root+"include/anketa.php";
        path += "?odpoved=" + odpoved;
        zobraz = "";
		xmlHttp.open("GET", path);
		xmlHttp.onreadystatechange = zobraz_vysledek;
		xmlHttp.send(null);
	}
    return false;
}