function zmien(str)
{
document.getElementById('teksty').style.display="block"
j=0
var AJAX
try
  {
  AJAX = new XMLHttpRequest();
  }
catch(e)
{
try
  {
  AJAX = new ActiveXObject("Msxml2.XMLHTTP");
  }
catch(e)
{
try
  {
  AJAX = new ActiveXObject("Microsoft.XMLHTTP");
  }
catch(e)
{
alert("Przepraszamy, ta przeglądarka nie jest w stanie poprawnie wyświetlić tej strony. Zalecane przeglądarki: \nInternet Explorer 5.5 (lub nowszy)\nFirefox 1.0 (lub nowszy)\nOpera 8.0 (lub nowsza)")
return false
}}}
AJAX.onreadystatechange = function()
{
if(AJAX.readyState==4)
  {
   document.getElementById('czekacz').style.display="none"
   document.getElementById('teksty').innerHTML=AJAX.responseText
  }
else{document.getElementById('czekacz').style.display="block"}
}
AJAX.open('POST', 'strony.php?strona='+str , true)
AJAX.send(null)
}

function zakladka(zakladka)
{
podstr = new Array("text","cennik","foto");
for(i=0; i<podstr.length; i++)
  {if(document.getElementById(podstr[i]))
    {
    if(zakladka==podstr[i]){document.getElementById(podstr[i]).style.display="block"}
    else {document.getElementById(podstr[i]).style.display="none"}
    }
  }
}

var j=0
function foto(kierunek, ilosc)
{
if(kierunek=='next')
  {
  if(j+1<ilosc)
    {j++
    document.getElementById('galeriaFoto').src=""
    document.getElementById('galeriaFoto').src=document.getElementById('foto'+j).value;

    if(j+1==ilosc){document.getElementById('next').style.visibility="hidden"}
      else{document.getElementById('next').style.visibility="visible"}
    if(j>=1){document.getElementById('prev').style.visibility="visible"}
    }
  }
if(kierunek=='prev')
  {
  if(j>0)
    {j--
    document.getElementById('galeriaFoto').src=""
    document.getElementById('galeriaFoto').src=document.getElementById('foto'+j).value;
    }

    if(j+2<=ilosc){document.getElementById('next').style.visibility="visible"}
    if(j==0){document.getElementById('prev').style.visibility="hidden"}
      else{document.getElementById('prev').style.visibility="visible"}

  }
if(isInt(kierunek))
  {
  j=parseInt(kierunek)
  document.getElementById('galeriaFoto').src=""
  document.getElementById('galeriaFoto').src=document.getElementById('foto'+j).value;
  
    if(j==0){document.getElementById('prev').style.visibility="hidden"}
      else{document.getElementById('prev').style.visibility="visible"}
    if((j+1)==ilosc){document.getElementById('next').style.visibility="hidden"}
      else{document.getElementById('next').style.visibility="visible"}
  }
}

 function isInt(x) 
 {
   var y=parseInt(x);
   if (isNaN(y)) return false;
   return x==y && x.toString()==y.toString();
 } 
 
function zmienStolik(stolik) //werHTML
{
podstr = new Array("restauracja","galeria","stolowka", "sklep", "bar", "kontakt", "dojazd");
for(i=0; i<podstr.length; i++)
  {if(document.getElementById('stoliki'+podstr[i]))
    {
    if(stolik==podstr[i]){document.getElementById('stoliki'+podstr[i]).style.display="block"}
    else {document.getElementById('stoliki'+podstr[i]).style.display="none"}
    }
  }
}