var currForm,currInput,whisperer,whispererTitle,whispererContent,whispererType;
var cities,streets,divs;
var selIndex = -1;

//kody stlacenych klaves
var ENTER = 13;
var ESC = 27;
var KEYUP = 38;
var KEYDN = 40;

//zrusi default udalost
function cancelEvent(event)
{
 if (!window.event)
  event.preventDefault();
 else
  window.event.returnValue = false;
}

//zatvori sepkara
function closeWhisperer()
{
 whisperer.style.display = 'none';
}

//vypise mesta
function doLoadCity()
{
 if (txtResponse != '')
 {
  cities = txtResponse.split(',');
  whispererTitle.innerHTML = '<small><nobr>Vyberte mesto:<\/nobr><\/small>';
  whispererContent.innerHTML = '';
  for (var c = 0; c < cities.length; c ++)
   whispererContent.innerHTML += '<div onmouseover="setSelIndex(' + c + ')"><nobr><a href="javascript:void writeCity(\'' + cities[c] + '\')">' + cities[c] + '<\/a><\/nobr><\/div>';
  divs = whispererContent.getElementsByTagName('div');
  selIndex = -1;
  showWhisperer();
 }
 else
 {
  whispererContent.innerHTML = '';
  whisperer.style.display = 'none';
 }
}

//vypise ulice
function doLoadStreet()
{
 if (txtResponse != '')
 {
  streets = txtResponse.split(',');
  whispererTitle.innerHTML = '<small><nobr>Vyberte ulicu:<\/nobr><\/small>';
  whispererContent.innerHTML = '';
  for (var c = 0; c < streets.length; c ++)
   whispererContent.innerHTML += '<div onmouseover="setSelIndex(' + c + ')"><nobr><a href="javascript:void writeStreet(\'' + streets[c] + '\')">' + streets[c] + '<\/a><\/nobr><\/div>';
  divs = whispererContent.getElementsByTagName('div');
  selIndex = -1;
  showWhisperer();
 }
 else
 {
  whispererContent.innerHTML = '';
  whisperer.style.display = 'none';
 }
}

//vypocita horny okraj sepkara
function getWhispererTop()
{
 var wt = 0;
 var ci = currInput;
 while (ci.offsetParent)
 {
  wt += ci.offsetParent.offsetTop;
  ci = ci.offsetParent;
 }
 return wt;
}

//vypocita lavy okraj sepkara
function getWhispererLeft()
{
 var wl = 0;
 var ci = currInput;
 while (ci.offsetParent)
 {
  wl += ci.offsetParent.offsetLeft;
  ci = ci.offsetParent;
 }
 return wl;
}

//inicializuje sepkara
function initWhisperer()
{
 whisperer = document.getElementById('whisperer');
 whispererTitle = document.getElementById('whispererTitle');
 whispererContent = document.getElementById('whispererContent');
 for (var f = 0; f < document.forms.length; f ++)
 {
  for (var i = 0; i < document.forms[f].elements.length; i ++)
  {
   document.forms[f].elements[i].onfocus = setForm;
   document.forms[f].elements[i].setAttribute("autocomplete","off");
  }
 }
}

//nacita mesto
function loadCity(event,city)
{ 
 if (!isAjax || !whisperer)
  return;
 var keyCode = !window.event ? event.which : window.event.keyCode;
 switch(keyCode)
 {
	case ENTER :
	case ESC :
	case KEYUP :
	case KEYDN :
	 return;
  default :
   if ((keyCode == 8) || (keyCode > 31))
   {
    currInput = currForm.city;
    ajax_post('http://www.internetatv.sk/web/inc/ajax.php','com=load_cities&city=' + city,doLoadCity);
   }
   whispererTitle.innerHTML = '<small><nobr>Načítavam mestá...<\/nobr><\/small>';
   if (whispererType != 'city')
    whispererContent.innerHTML = '';
   whispererType = 'city';
   showWhisperer();
 }
}

//nacita ulicu
function loadStreet(event,city,street)
{
 if (!isAjax || !whisperer)
  return;
 var keyCode =
  event.mouseButton
   ? event.mouseButton
   : (!window.event ? event.which : window.event.keyCode);
 switch(keyCode)
 {
	case ENTER :
	case ESC :
	case KEYUP :
	case KEYDN :
	 return;
  default :
   if ((keyCode == 1) || (keyCode == 8) || (keyCode > 31))
   {
    currInput = currForm.street;
    ajax_post('http://www.internetatv.sk/web/inc/ajax.php','com=load_streets&city=' + city + '&street=' + street,doLoadStreet);
   }
   whispererTitle.innerHTML = '<small><nobr>Načítavam ulice...<\/nobr><\/small>';
   if (whispererType != 'street')
    whispererContent.innerHTML = '';
   whispererType = 'street';
   showWhisperer();
 }
}

//urci aktualneho formularu
function setForm()
{
 currForm = this.form;
 //ak sa aktivuje pole 'street', nacita zoznam ulic
 if (this.name == 'street')
  loadStreet({mouseButton : 1},this.form.city.value,this.value);
}

//nastavi vyznacenu polozku
function setSelIndex(si)
{
 if (selIndex != -1)
  divs[selIndex].className = '';
 selIndex =
  si > divs.length - 1 ?
  0 :
  (si < 0 ? divs.length - 1 : si);
 divs[selIndex].className = 'selected';
}

//zobrazi sepkara
function showWhisperer()
{
 whisperer.style.left = getWhispererLeft() + 'px';
 whisperer.style.top = getWhispererTop() + currInput.offsetHeight + 'px';
 //whisperer.style.width = currInput.offsetWidth + 'px';
 if (whisperer.style.display != 'block')
  whisperer.style.display = 'block';
}

//onkeydown
function whispererKeyDown(event)
{
 if (!isAjax || !whisperer || (whisperer.style.display != 'block'))
  return;
 var keyCode = !window.event ? event.which : window.event.keyCode;
 switch(keyCode)
 {
  case ESC :
   closeWhisperer();
   cancelEvent(event);
   break;
  case KEYUP :
   setSelIndex(selIndex - 1);
   cancelEvent(event);
   break;
  case KEYDN :
   setSelIndex(selIndex + 1);
   cancelEvent(event);
   break;
  case ENTER :
   if (whispererType == 'city' && selIndex != -1)
    writeCity(cities[selIndex]);
   else
   {
    if (whispererType == 'street' && selIndex != -1)
     writeStreet(streets[selIndex]);
   }
   cancelEvent(event);
   break;
 }
}

//zapise mesto do formularu
function writeCity(city)
{
 currForm.city.value = city;
 whisperer.style.display = 'none';
}

//zapise ulicu do formularu
function writeStreet(street)
{
 currForm.street.value = street;
 whisperer.style.display = 'none';
}