function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function openWin(pic, width, height) {
  var picwin=window.open(pic, 'freee', 'location=0,resizable=0,status=0,titlebar=1,toolbar=0,directories=0,menubar=0,scrollbars=0,width='+width+',height='+height);
  picwin.focus();
}

function reg_check() {
  ret = true;
  if (!document.reg_form.username.value || 
      !document.reg_form.password.value || 
      !document.getElementById('email').value || 
      !document.getElementById('vnev').value || 
      !document.getElementById('knev').value || 
      (!document.getElementById('fiu').checked && 
      !document.getElementById('lany').checked) || 
      !document.getElementById('szul_year').value || 
      !document.getElementById('szul_month').value || 
      !document.getElementById('szul_day').value || 
      !document.getElementById('varos').value) {
    alert('Minden *-gal jelölt mezőt ki kell tölteni!');
    ret = false;
  }
  if ((document.reg_form.password.value != document.getElementById('password2').value) && ret) {
   alert('A jelszavak nem egyeznek!');
    ret = false;
    document.reg_form.password.focus(); 
  }
  if ((document.getElementById('sms').checked && (!document.getElementById('mob').value || !document.getElementById('szam').value)) && ret) {
    alert('SMS-t csak helyesen megadott mobilszámra tudunk küldeni!');
    ret = false;
    document.reg_form.mob.focus(); 
  }
  return ret;
}

function adatm_check() {
  ret = true;
  if (!document.getElementById('email').value || 
      !document.getElementById('varos').value) {
    alert('Minden *-gal jelölt mezőt ki kell tölteni!');
    ret = false;
  }
  if ((document.adatm_form.password.value != document.getElementById('password2').value) && ret) {
    alert('A jelszavak nem egyeznek.');
    ret = false;
    document.adatm_form.password.focus();
  }
  if ((document.getElementById('sms').checked && (!document.getElementById('mob').value || !document.getElementById('szam').value)) && ret) {
    alert('SMS-t csak helyesen megadott mobilszámra tudunk küldeni!');
    ret = false;
    document.adatm_form.mob.focus(); 
  }
  return ret;
}

function uzenet_check() {
  ret = true;
  if (!document.getElementById('tu').value) {
    alert('Nincs címzett!');
    ret = false;
  }
  if (!document.getElementById('szoveg').value) {
    alert('Nincs üzenet!');
    ret = false;
  }
  return ret;
}

function gal_upload_check() {
  ret = true;
  if (!document.getElementById('gal_cim').value) {
    alert('Nincs megadva a galéria címe!');
    ret = false;
  }
  if (!document.getElementById('idx').value) {
    alert('Nincs megadva címkép!');
    ret = false;
  }
  return ret;
}

function mp3_upload_check() {
  ret = true;
  if (!document.getElementById('id3').checked &&
      (!document.getElementById('eloado').value ||
       !document.getElementById('cim').value )) {
    alert('Ha nem az ID3 tag-ből kiolvasást választod, a *-gal jelölt mezők kitöltése kötelező!');
    ret = false;
  }
  return ret;
}

function szavaz_check() {
  ret = true;
  if ((document.getElementById('v1') && document.getElementById('v1').checked) || 
      (document.getElementById('v2') && document.getElementById('v2').checked) || 
      (document.getElementById('v3') && document.getElementById('v3').checked) || 
      (document.getElementById('v4') && document.getElementById('v4').checked) || 
      (document.getElementById('v5') && document.getElementById('v5').checked) || 
      (document.getElementById('v6') && document.getElementById('v6').checked) || 
      (document.getElementById('v7') && document.getElementById('v7').checked) || 
      (document.getElementById('v8') && document.getElementById('v8').checked)) {
    ret = true;
    } else {
    alert('Egyik válasz sincs megjelölve!');
    ret = false;
  }
  return ret;
}

function jatek_check() {
  ret = true;
  if ((document.getElementById('v1') && document.getElementById('v1').checked) || 
      (document.getElementById('v2') && document.getElementById('v2').checked) || 
      (document.getElementById('v3') && document.getElementById('v3').checked) || 
      (document.getElementById('v4') && document.getElementById('v4').checked) || 
      (document.getElementById('v5') && document.getElementById('v5').checked) ||
      (document.getElementById('kifejt') && document.getElementById('kifejt').value)) {
    ret = true;
    } else {
    alert('Nincs megadva válasz!');
    ret = false;
  }
  return ret;
}

function newtopic_check() {
  ret = true;
  if (!document.getElementById('newtopic').value ||
      !document.getElementById('firstpost').value) {
    alert('A cím és az indító hozzászólás megadása kötelező!');
    ret = false;
  }
  return ret;
}

function chat_unreg(user) {
/*  new Ajax.Request ('content/chat_unregister.php', {
    method: 'get',
    parameters: {user: user},
  }); */
  ajax('content/chat_unregister.php', 'user='+user, 'post', '', 0);
//  setTimeout(alert(ajaxResponse), 500);
}

var http_request = false;
var ajaxResponse = false;

function processAjaxRequest(progress) {
  if (http_request.readyState == 1 ) { //connect
    if (progress == 1) { }
  }
  if (http_request.readyState == 2 ) { //send
    if (progress == 1) { }
  }
  if (http_request.readyState == 3 ) { //process
    if (progress == 1) { }
  }
  if (http_request.readyState == 4 ) { //complete
    alert(http_request.readyState);
    if (http_request.status == 200) {
      var cType = http_request.getResponseHeader('Content-Type');
      if (cType == "text/plain") { ajaxResponse = http_request.responseText; }
      else if (cType == "text/xml") { ajaxResponse  = http_request.responseXML; }
      else { ajaxResponse = 'ismeretlen response header'; }
      if (progress == 1) { }
    }
  }
}

function ajax(url, parameters, method, charset, progress) {
  var mime = 'text/xml'+ (charset == '' ? '' : '; charset='+charset);
  if (window.XMLHttpRequest) {
    http_request = new XMLHttpRequest();
    if (http_request.overrideMimeType) { http_request.overrideMimeType(mime); }
  } else if (window.ActiveXObject) {
    var avers = ["Microsoft.XmlHttp", "MSXML2.XmlHttp", "MSXML2.XmlHttp.3.0",  "MSXML2.XmlHttp.4.0", "MSXML2.XmlHttp.5.0"];
    for (var i = avers.length -1; i >= 0; i--) {
      try {http_request = new ActiveXObject(avers[i]);
      } catch(e) {}
    }
  }
  if (!http_request) { return false; }
 
  http_request.onreadystatechange = processAjaxRequest(progress);
  if (method == 'post') {
    http_request.open('POST', url, true);
    http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request.setRequestHeader("Content-length", parameters.length);
    http_request.setRequestHeader("Connection", "close");
    http_request.send(parameters);
  } else if (method == 'get') {
	  http_request.open("GET", url+"?"+parameters, true);
    http_request.send(null);
  } else return false;
}