/* predchachovani obrazku menu */
var a = new Image();
a.src = "img/menu/Normal/nase_smecka.jpg";
var b = new Image();
b.src = "img/menu/Normal/agility.jpg";
var c = new Image();
c.src = "img/menu/Normal/foto_video.jpg";
var d = new Image();
d.src = "img/menu/Normal/gbook.jpg";
var e = new Image();
e.src = "img/menu/Normal/zazitky.jpg";
var f = new Image();
f.src = "img/menu/Normal/odkazy.jpg";
               
/* predchachovani obrazku odrazek */
var g = new Image();
g.src = "img/odrazka.png";
var h = new Image();
h.src = "img/odrazka1.png";

/* preload log */
var i = new Image();
i.src = "img/logo1.jpg";
var j = new Image();
j.src = "img/logo2.jpg";
var k = new Image();
k.src = "img/logo3.jpg";

/* zmena pozadi */
function zmen(id,cesta) {
  document.getElementById(id).style.background = "url(" + cesta + ")";
  document.getElementById(id).style.backgroundRepeat = "no-repeat";
}

/* vyska leveho sloupce */
function resize () {
if (document.getElementById('leve_menu')) {
  x = document.getElementById('stred').offsetHeight;
  document.getElementById('leve_menu').style.height = (x + 150) + "px";
  }
}

/* zmena horniho loga */
/*var obr=1;
function logo() {
  setInterval("obr++;zmenLogo();",5000);
};

function zmenLogo() {
  if (obr==1){
    document.getElementById('logo').style.backgroundImage = "url('img/logo1.jpg')";
    
    }
  if (obr==2) {
    document.getElementById('logo').style.backgroundImage = "url('img/logo2.jpg')";
    
  }
  if (obr==3) {
    document.getElementById('logo').style.backgroundImage = "url('img/logo3.jpg')";
    obr=0;                                                                         
  }
};
     */
/* zobrazeni/skryti objektu */
var zobrazen = false;
function zobraz(ide) {
    if (zobrazen==0) { 
        document.getElementById(ide).style.display = 'block';
        zobrazen=true;
      }
    else{
      document.getElementById(ide).style.display = 'none';
      zobrazen=false
    }
};

/* zobrazeni fotky v divu na strance, div musi mit id="fotecka" */
function zobraz_foto(cesta,fotka,x) {  
  div = document.getElementById('fotecka');
  div.style.display="block";
  div.innerHTML = "<img src='" + x.src + "' width='400' id='zfotecka' class='zobrazenafotka'><span class='zavrit'>Zavřit - click</span>";
  /* umisteni divu s obrazkem */
  div.style.top = document.body.scrollTop + ((document.body.clientHeight/2)-(400/2));
  div.style.left = document.body.clientWidth/2 - 200;
}

function preload_image (cesta,fotka,zobraz) {
  x = new Image();
  x.src = cesta + fotka;
  if (zobraz != 1)
    zobraz_foto(cesta,fotka,x);  
}

/* nahrazeni smajliku v guestbooku */
function smajl(t){ 
    document.forms.novyg.text.value+= '' + t + ''; 
}

/* AJAX */
var xmlhttp;
function AJAX_object() {
  if (window.XMLHttpRequest)
    {
      return new XMLHttpRequest();
     }
  else if (window.ActiveXObject)
    {
      return new ActiveXObject("Microsoft.XMLHTTP");
    }
  return null;
}

function AJAX_html(url, div) {
  xmlhttp = AJAX_object();
  xmlhttp.onreadystatechange = function() {
    if (xmlhttp.readyState == 4){
        document.getElementById(div).innerHTML = xmlhttp.responseText;
    }
    else {
      document.getElementById(div).innerHTML = "<img src='jquery/loadingAnimation.gif' alt='Cekejte, prosim'>";
    }
  }
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);
}

function tb_init(){
    $(document).click(function(e){
    e = e || window.event;
    var el = e.target || e.scrElement || null;
    if(el && el.parentNode && !el.className || !/thickbox/.test(el.className))
    el = el.parentNode;
    if(!el || !el.className || !/thickbox/.test(el.className))
    return;
    var t = el.title || el.name || null;
    var a = el.href || el.alt;
    var g = el.rel || false;
    tb_show(t,a,g);
    el.blur();
    return false;
    });
};

//jquery accordion initialization routine
function initMenu() {
	$('#fotky_accordion ul').hide();
	$('#fotky_accordion li a').click(
	function() {
		$(this).next().slideToggle('normal');
	}
	);
}
$(document).ready(function() {initMenu();});