// Newsletter AJAX
var xHttpN = vytvor_XMLHttp();

function nacitanie_vysledku(){
	var div_formular = document.getElementById('formular');
	var xmldoc = xHttpN.responseXML;
	var uzly = xmldoc.getElementsByTagName("hlasenie"); 
	var pocet = uzly.length;
	if(pocet!=0){
		for(i=0; i<pocet; i++){
			var hlasenie = uzly[i].getElementsByTagName("uspesne"); 
			div_formular.innerHTML = '<p class="uspech">' + hlasenie[0].firstChild.nodeValue + '</p>';
		}
	}
  /*else {			
		div_formular.innerHTML = '<p class="neuspech">Ospravedlňujeme sa, ale vyskytla sa chyba, opakujte pokus.</p>';
	} */
}
function odosli_ziadost(url){
  var adresa = document.getElementById('email').value;
  var spravny_tvar = new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
	var vysledok_porovnania = adresa.search(spravny_tvar); //vrací: 5
  if(vysledok_porovnania != -1){
    xHttpN.open("POST","includes/registracia-newsletter.php", true);
    xHttpN.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xHttpN.onreadystatechange = nacitanie_vysledku;
    xHttpN.send('znamka=12345&email=' + adresa);
  } else {
    alert("Zadali ste e-mailovú adresu v nesprávnom tvare !");
  }
}
function vytvor_XMLHttp(){
	var xmlHttp = false;
	
	if(window.ActiveXObject){
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} else if(window.XMLHttpRequest){
		xmlHttp = new XMLHttpRequest();
	}
	
	return xmlHttp;
}