// JavaScript Document

window.onresize = function(event) {
  w = window.innerWidth;
  h = window.innerHeight;
  document.getElementById("patinfo").innerHTML = " "+w+" x "+h+"px";
  nastavCookie("display", w+":"+h, 1);
  if(w>640) document.getElementById("hl-menu").style.display = "block"; 
};

var pozice = 0;
posuv = 0;
obr = [];
i = 0;
cesta = window.location.protocol + "//" + window.location.host+"/"; //+ window.location.pathname;  

function fb(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "https://connect.facebook.net/cs_CZ/sdk.js#xfbml=1&version=v2.6&appId=114153604063";
  fjs.parentNode.insertBefore(js, fjs);
}



window.onload=function(){

  
  w = window.innerWidth;
  h = window.innerHeight;
  document.getElementById("patinfo").innerHTML = " "+w+" x "+h+"px";
  nastavCookie("display", w+":"+h, 1);
  x = document.createElement("div");  
  x.setAttribute("id", "obrazek");
  x.setAttribute("poz", 0);                                
  document.body.appendChild(x);                               
  n = document.getElementsByTagName("A").length;
  text = "";
  bb = 0;
  obrazky2 = [];
   
for(a = 0; a < n; a++)
{
  text = document.getElementsByTagName("A")[a].getAttribute("href");
  zkouska = /images/; 
  if(zkouska.test(text))
  {
  
  text = text.replace(/\/images/i, 'img/c');
  testovani = document.getElementsByTagName("A")[a].getAttribute("title");
  document.getElementsByTagName("A")[a].setAttribute("name", bb); 
  obrazky2[bb] = [cesta+text,testovani];                        
  document.getElementsByTagName("A")[a].onclick = function()
  {
    zobrazit(this.name);
    return false;
  }
  bb += 1;    
}}



document.getElementById("ikona-menu").onclick = function()
{
 var e = document.getElementById("hl-menu");
    if(e.style.display=="block"){
       e.style.display="none";
       
    } else {
       e.style.display="block";
    }
}

zabal_obrazky("imgclanek","divimgclanek");

  

}

//if(window.innerWidth > 1282){document.onscroll=function(){document.body.style.backgroundPosition = "0 -"+(document.documentElement.scrollTop/2)+"px";}}

function zavri_menu()
{
document.getElementById("hl-menu").style.display="none";
}

function nastavCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays*24*60*60*1000));
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + "; " + expires;
}

function zabal_obrazky(co, cim)
  {
  x = document.getElementsByClassName(co);
  if(x.length > 0)
  {
  for(i=0;i<x.length;i++)
    {
    newDiv = document.createElement("div");
    newDiv.className = cim;
    newDiv.appendChild(x[i].parentNode.replaceChild(newDiv,x[i]));
    document.getElementsByClassName(cim)[i].style = "background-image: url('"+x[i].src+"'); width: "+x[i].offsetWidth+"px; height: "+x[i].offsetHeight+"px;";
    x[i].style = "display: none;";
    }
}}

function zobrazit(i)
{
  i = i*1;
  if(posuv == 0) document.getElementById("obrazek").setAttribute("poz", pozice); 
  window.scrollTo(0, 0); 
   
  document.getElementById("obrazek").style.display = "block";
  
    lstrana = "";
    pstrana = ""; 
  if(i < (bb - 1)) pobr = i+1;
  if(i == (bb - 1)) pobr = 0;  
  document.getElementById("obrazek").innerHTML = "<div id='img-obal' onclick='zavriimg()'></div><div id='img-stred'><img id='aktualni' onclick=\"zobrazit("+pobr+")\" src=\""+obrazky2[i][0]+"\" \/><br /><p>"+obrazky2[i][1]+"<span id='img-info'></span></p><img id='img-close' onclick='zavriimg()' src='/style/close.png' /></div>";
  posuv = 1; 
  if(w < (h * 1.33)) {document.getElementById("aktualni").setAttribute("width", (w - 60)); }
    else {document.getElementById("aktualni").setAttribute("height", (h - 60));} 
  document.getElementById("obrazek").style.display = "block";
  
  document.getElementById("aktualni").style.opacity = 1;  
//uloz informace  
  data1 = "jmeno="+obrazky2[i][0]+"&stranka="+document.baseURI+"&ip=18.223.119.17 : www.ditom.cz";   
  var xhttp = new XMLHttpRequest(); 
  
  xhttp.onreadystatechange = function() {
    if (xhttp.readyState == 4 && xhttp.status == 200) {
      
    }
    }
     
  xhttp.open("POST", "foto-view.php", true);
  xhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded;charset=utf-8");
  xhttp.setRequestHeader("Content-length", data1.length);
  xhttp.setRequestHeader("Connection", "close");
  xhttp.send(data1);
       
 }



function zavriimg() {
  document.getElementById("obrazek").innerHTML = "";
  document.getElementById("obrazek").style.display = "none"; 
  posuv = 0;
  window.scrollTo(0, document.getElementById("obrazek").getAttribute("poz"));
} 

window.onscroll = function()
{
  pozice = getScrollingPosition()[1]; 
  if(posuv == 1) window.scrollTo(0,0);
}


function getScrollingPosition()
{
  var position = [0, 0];
  if (typeof window.pageYOffset != 'undefined') {position = [window.pageXOffset, window.pageYOffset];}
  else if (typeof document.documentElement.scrollTop != 'undefined' && document.documentElement.scrollTop > 0) {position = [document.documentElement.scrollLeft, document.documentElement.scrollTop];}
  else if (typeof document.body.scrollTop != 'undefined') {position = [document.body.scrollLeft, document.body.scrollTop];}
  return position;
} 

function scrollToTop(scrollDuration) {
    var scrollStep = -window.scrollY / (scrollDuration / 2),
        scrollInterval = setInterval(function(){
        if ( window.scrollY != 0 ) {
            window.scrollBy( 0, scrollStep );
        }
        else clearInterval(scrollInterval); 
    },2);
}