function mezo_torles(mezo){
  if(mezo.value=="felhasználónév" || mezo.value=="jelszó")
	{
	  mezo.value="";
	}
} 

function email_ellenorzes(form)
{
  var email_uj= prompt('Kérme adja meg mégegyszer az email-címét!', '');
  
  if ( (email_uj=='') || (email_uj==null) ) 
  { 
    alert('Nem adott meg ellenőrző email-címet');
	return false
  } 
  else
  {
    if(email_uj==form.adat_3v.value)
    {
      return true;
    }
    else
    {
      alert('A 2 email-cím nem egyezik meg! Kérem ellenőrízze, és adja meg újra!\n'+form.adat_3v.value+' <-> '+email_uj);
	  return false;
    }
  }
  //alert(form.name);
} 


//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

function msz_reszlet_0(mezo_id)
{
	document.getElementById(mezo_id).style.display='none';
	document.getElementById('hc_isz_kotelezo').value='0';	
	document.getElementById('hc_telepules_kotelezo').value='0';	
	document.getElementById('hc_uhsz_kotelezo').value='0';	
}  
function msz_reszlet_1(mezo_id)
{
	document.getElementById('hc_isz_kotelezo').value='1';	
	document.getElementById('hc_telepules_kotelezo').value='1';	
	document.getElementById('hc_uhsz_kotelezo').value='1';		
	document.getElementById(mezo_id).style.display='inline';
}  
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

<!-- ******************************************** POP UPLAYER **************************************************  -->
/******************************************
* Popup Box- By Jim Silver @ jimsilver47@yahoo.com
* Visit http://www.dynamicdrive.com/ for full source code
* This notice must stay intact for use
******************************************/

var ns4=document.layers
var ie4=document.all
var ns6=document.getElementById&&!document.all

//drag drop function for NS 4////
/////////////////////////////////

var dragswitch=0
var nsx
var nsy
var nstemp


var one_time=1
// this function gets the cookie, if it exists
function Get_Cookie( name ) {
	
var start = document.cookie.indexOf( name + "=" );
var len = start + name.length + 1;
if ( ( !start ) &&
( name != document.cookie.substring( 0, name.length ) ) )
{
return null;
}
if ( start == -1 ) return null;
var end = document.cookie.indexOf( ";", len );
if ( end == -1 ) end = document.cookie.length;
return unescape( document.cookie.substring( len, end ) );
}
	

function Set_Cookie( name, value, nMinute, path, domain, secure ) 
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct 
expires time, the current script below will set 
it for x number of days, to make it for hours, 
delete * 24, for minutes, delete * 60 * 24
*/
if ( nMinute )
{
expires = 1 * 1000 * nMinute * 60 * 1;
//expires = 1000 * 5;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
( ( path ) ? ";path=" + path : "" ) + 
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}


function drag_dropns(name){
if (!ns4)
return
temp=eval(name)
temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
temp.onmousedown=gons
temp.onmousemove=dragns
temp.onmouseup=stopns
}

function gons(e){
temp.captureEvents(Event.MOUSEMOVE)
nsx=e.x
nsy=e.y
}
function dragns(e){
if (dragswitch==1){
temp.moveBy(e.x-nsx,e.y-nsy)
return false
}
}

function stopns(){
temp.releaseEvents(Event.MOUSEMOVE)
}

//drag drop function for ie4+ and NS6////
/////////////////////////////////


function drag_drop(e){
if (ie4&&dragapproved){
crossobj.style.left=tempx+event.clientX-offsetx
crossobj.style.top=tempy+event.clientY-offsety
return false
}
else if (ns6&&dragapproved){
crossobj.style.left=tempx+e.clientX-offsetx+"px"
crossobj.style.top=tempy+e.clientY-offsety+"px"
return false
}
}

function initializedrag(e){
crossobj=ns6? document.getElementById("showimage") : document.all.showimage
var firedobj=ns6? e.target : event.srcElement
var topelement=ns6? "html" : document.compatMode && document.compatMode!="BackCompat"? "documentElement" : "body"
while (firedobj.tagName!=topelement.toUpperCase() && firedobj.id!="dragbar"){
firedobj=ns6? firedobj.parentNode : firedobj.parentElement
}

if (firedobj.id=="dragbar"){
offsetx=ie4? event.clientX : e.clientX
offsety=ie4? event.clientY : e.clientY

tempx=parseInt(crossobj.style.left)
tempy=parseInt(crossobj.style.top)

dragapproved=true
document.onmousemove=drag_drop
}
}
document.onmouseup=new Function("dragapproved=false")

////drag drop functions end here//////

function loadornot()
{
  if (Get_Cookie('popuplayer')=='yes')
  {
    hidebox();
    //Set_Cookie('popuplayer', 'yes', 30, '/', '', '' );
    //alert(Get_Cookie('popuplayer')+' xxx');
  }
  else
  {
	if (ie4||ns6)
	{
	  document.getElementById("menu_oszlop").style.visibility="hidden";
	  //document.getElementById("ref_div").style.visibility="hidden";	  
	}
	else if (ns4)
	{
	  document.getElementById("menu_oszlop").visibility="hide";
	  //document.getElementById("ref_div").visibility="hide";	  
	}
  }
}



function hidebox(){
crossobj=ns6? document.getElementById("showimage") : document.all.showimage
if (ie4||ns6)
  crossobj.style.visibility="hidden";
else if (ns4)
  document.showimage.visibility="hide"
Set_Cookie('popuplayer', 'yes', 5, '/', '', '' );
}

function popup_window(){
  if (one_time==1)
  {
	loadornot();
  }
}


function gotoURL(url){
  hidebox();
  location.href = url;
}

<!-- ******************************************** POP UPLAYER **************************************************  -->