function odpoved(id){
var el = document.getElementById('text');
if (el) {
el.focus();
if (el.value != '') el.value += "\r\n";
el.value += '[' + (id) + '] ';
}}

function kontrola(f){
var vysledek = true;
var strerr = "";

tl = document.kf.text.value.length;
cl = document.kf.captcha.value.length;
if ((f.captcha.value=="") || (cl!=4)) {strerr += "Opište řádně text z obrázku.\n";f.captcha.style.borderColor = "#FF8181";}else{f.captcha.style.borderColor = "silver";}
if (f.name.value=="") {strerr += "Vyplňte prosím jméno.\n";f.name.style.borderColor = "#FF8181";}else{f.name.style.borderColor = "silver";}
if ((f.text.value=="") || (tl<=2)) {strerr += "Napište prosím alespoň nějaký smysluplný text.\n";f.text.style.borderColor = "#FF8181";}else{f.text.style.borderColor = "silver";}

if ("" != strerr) {
vysledek = false;
//alert(strerr);
alert('Vyplňte řádně označená pole.');
}
return vysledek;
}

function nahledkomentare(){
var http_request = false;
var coordinance = document.getElementById('coordinance').value;
var name = document.getElementById('name').value;
var mail = document.getElementById('mail').value;
var web = document.getElementById('web').value;
var text = document.getElementById('text').value;

var request = "coordinance="+coordinance+"&name="+name+"&mail="+mail+"&web="+web+"&text="+text;

if (window.XMLHttpRequest) {
http_request = new XMLHttpRequest();
} else if (window.ActiveXObject) {
try {
  http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (eror) {
  http_request = new ActiveXObject("Microsoft.XMLHTTP");
}}

http_request.onreadystatechange = function() { returnValidate(http_request); };
http_request.open('POST', '/komentare_nahled.php', true);
http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
http_request.send(request);
}

function returnValidate(http_request) {
if (http_request.readyState == 4) {
if (http_request.status == 200) {
var html = '';
html += http_request.responseText;
var ndiv = document.getElementById('komentare_nahled');
ndiv.innerHTML = html;
} else {alert('Failure!');}}}