function mutat(subject) { if(document.getElementById(subject).style.display=='none') { document.getElementById(subject).style.display='inline'; } }
function mutat2(subject) { if(document.getElementById(subject).style.display=='none') { document.getElementById(subject).style.display='block'; } }
function rejt(subject) { if(document.getElementById(subject).style.display=='inline') { document.getElementById(subject).style.display='none'; } }

function nyit(subject) { 
if  ( document.getElementById(subject).style.display == 'inline') { document.getElementById(subject).style.display = 'none'; }
	else { document.getElementById(subject).style.display = 'inline';  }
}

function load(url,place) {
document.getElementById(place).innerHTML = "<div style=\"text-align:center;font-family: Arial; font-size:12px; font-weight:bold; margin-top:100px;;\">Betöltés...<br><img src=ajax-loader.gif></div>";
 var req = null;
 if (window.XMLHttpRequest)
  req = new XMLHttpRequest()
 else
  if (window.ActiveXObject) req = new ActiveXObject("Microsoft.XMLHTTP");

 req.onreadystatechange = function() {
if (req.readyState == 4)
   if (req.status == 200)
     document.getElementById(place).innerHTML = req.responseText;
   else
    document.getElementById(place).innerHTML = "AJAX error.";
 } 
 req.open("GET", url, true); 
 req.send(null);
 }

function load2(url,place) {
document.getElementById(place).style.display = "inline";
 var req = null;
 if (window.XMLHttpRequest)
  req = new XMLHttpRequest()
 else
  if (window.ActiveXObject) req = new ActiveXObject("Microsoft.XMLHTTP");

 req.onreadystatechange = function() {
  if (req.readyState == 4)
   if (req.status == 200)
	
    document.getElementById(place).innerHTML = req.responseText;
   else
    document.getElementById(place).innerHTML = "AJAX error.";
 } 
 req.open("GET", url, true); 
 req.send(null);
}

function huver(place){
var dd = document.getElementById(place);






}


//form checking

function mailcheck() {
var x = document.uzen.emil.value;
var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (document.uzen.nev.value == "")
          { alert("Nem adott meg nevet!"); document.uzen.nev.focus(); return false; }
if (document.uzen.emil.value == "")
          { alert("Nem adott meg E-mail címet!"); document.uzen.emil.focus(); return false; }
if (!filter.test(x))  { alert('A megadott E-mailcím hibás!');document.uzen.emil.focus(); return false; }
	
if (document.uzen.uzenet.value =='')
          { alert("Az üzenet szövege hiányzik!"); document.uzen.uzenet.focus(); return false; }		   
 else { return true; }
}