var tyzden;
var datum;
var mesto;
var stat;
var vystavisko;
var text;

function SelectDatum(str){
datum=GetXmlHttpObject();
if (datum==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterDatum.php";
url=url+"?a="+str;
url=url+"&sid="+Math.random();
datum.onreadystatechange=stateChangedDatum;
datum.open("GET",url,true);
datum.send(null);
}

function FilterText(str){
 

text=GetXmlHttpObject();
if (text==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterText.php";
url=url+"?a="+str;
url=url+"&sid="+Math.random();
text.onreadystatechange=stateChangedText;
text.open("GET",url,true);
text.send(null);
}



function SearchMesto(str1)
{
sport=GetXmlHttpObject();
if (sport==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterMesto.php";
url=url+"?a="+str1;
url=url+"&sid="+Math.random();
sport.onreadystatechange=stateChangedSport;
sport.open("GET",url,true);
sport.send(null);
}

function SearchStat(str1)
{
sutaz=GetXmlHttpObject();
if (sutaz==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterStat.php";
url=url+"?a="+str1;
url=url+"&sid="+Math.random();
sutaz.onreadystatechange=stateChangedSutaz;
sutaz.open("GET",url,true);
sutaz.send(null);
}

function SearchTyzden(str1)
{

tv=GetXmlHttpObject();
if (tv==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterTyzden.php";
url=url+"?a="+str1;
url=url+"&sid="+Math.random();
tv.onreadystatechange=stateChangedTV;
tv.open("GET",url,true);
tv.send(null);
}



function SearchVystavisko(str1)
{

tyzden=GetXmlHttpObject();
if (tyzden==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="FilterVystavisko.php";
url=url+"?a="+str1;
url=url+"&sid="+Math.random();
tyzden.onreadystatechange=stateChangedTyzden;
tyzden.open("GET",url,true);
tyzden.send(null);
}


function stateChangedSport()
{
if (sport.readyState==4)
{
document.getElementById("obsah").innerHTML=sport.responseText;
}
}

function stateChangedSutaz()
{
if (sutaz.readyState==4)
{
document.getElementById("obsah").innerHTML=sutaz.responseText;
}
}

function stateChangedText()
{
if (text.readyState==4)
{
document.getElementById("obsah").innerHTML=text.responseText;
}
}

function stateChangedTyzden()
{
if (tyzden.readyState==4)
{
document.getElementById("obsah").innerHTML=tyzden.responseText;
}
}

function stateChangedDatum()
{
if (datum.readyState==4)
{
document.getElementById("obsah").innerHTML=datum.responseText;
}
}

function stateChangedTV()
{
if (tv.readyState==4)
{
document.getElementById("obsah").innerHTML=tv.responseText;
}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}

function CancelFilter(){
    filter=GetXmlHttpObject();

if (filter==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }

var url="CancelFilter.php";
url=url+"?sid="+Math.random();
filter.onreadystatechange=stateChangedCancel;
filter.open("GET",url,true);
filter.send(null);

}

function stateChangedCancel()
{
if (filter.readyState==4)
{
document.getElementById("obsah").innerHTML=filter.responseText;
}
}