var w;
var h;
var szh;
var nagykepurl;

function effekt() {
	if (h < 476) {
		h = h + 138;
		document.getElementById("keret").style.height = h;
		ID = window.setTimeout("effekt();", 1);
	}
	else if (w < 500) {
		w = w + 100;
		document.getElementById("keret").style.width = w;
		ID = window.setTimeout("effekt();", 1);
	}
	else if (w == 500 && h == 476) {
		document.getElementById("kep").style.display = "block";
		document.getElementById("kep_szoveg").style.display = "block";
		w = 510;
		h = 500;
		ID = window.setTimeout("effekt();", 1);
	}
	else if (szh < 36) {
		szh = szh + 9;
		document.getElementById("kep_szoveg").style.height = szh;
		ID = window.setTimeout("effekt();", 1);
		document.getElementById("keret").style.height = 475 + szh;
	}
	else {
		document.getElementById("bezaras").style.display = "block";
	}
	
}
function Elore() {
	aktualis = aktualis + 1;
	Galeria();
}
function Vissza() {
	aktualis = aktualis - 1;
	Galeria();
}
function Galeria() {
	var maxMagassag;
	
	// ha van video, azt eltuntetjuk, amikor a galéria megjelenik
	if (document.getElementById("video")) {
		document.getElementById("video").style.display = "none";
	}
	
	// megnézzük, hogy kell-e effekt
	if (document.getElementById("sotetito").style.display == "" || document.getElementById("sotetito").style.display == "none") {
		w = 200;
		h = 200;
		szh = 0;
		ID = window.setTimeout("effekt();", 1);
	}
	
	if (window.innerHeight && window.scrollMaxY) {
		maxMagassag = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight) {
		maxMagassag = document.body.scrollHeight;
	} else {
		maxMagassag = document.body.offsetHeight;
	}
	document.getElementById("sotetito").style.display = "block";
	if (navigator.appName.indexOf("Microsoft Internet Explorer") == 0) {
		maxMagassag = maxMagassag - 4;
	}
	document.getElementById("sotetito").style.height = maxMagassag;
	document.getElementById("kepreteg").style.display = "block";
	
	if (window.screen) { 
		ablakWidth = screen.width;
		ablakHeight = 10;
		if (ablakWidth <= 1024) ablakHeight = 580;
		else if (ablakWidth <= 1280) ablakHeight = 850;
		else if (ablakWidth <= 1600) ablakHeight = 1000;
	}
	document.getElementById("keret").style.marginTop = (ablakHeight - 514)/2;
	document.links[0].href = "javascript:Vissza();";	
	document.links[1].href = "javascript:Elore();";	
	// visszaállítjuk a láthatóságot
	document.getElementById("elozo").style.visibility = "visible";
	document.getElementById("kovetkezo").style.visibility = "visible";
	
	if (aktualis == 0) document.getElementById("elozo").style.visibility = "hidden";
	if (aktualis == galeria.length-1) document.getElementById("kovetkezo").style.visibility = "hidden";
	
	document.getElementById("kep").style.backgroundImage = "url('" + mappa + "/" + galeria[aktualis] + "')";
}

function Bezaras() {
	document.getElementById("sotetito").style.display = "none";
	document.getElementById("kepreteg").style.display = "none";
	document.getElementById("kep").style.display = "none";
	document.getElementById("keret").style.height = "200px";
	document.getElementById("keret").style.width = "200px";
	document.getElementById("kep_szoveg").style.height = "0px";
	document.getElementById("kep_szoveg").style.display = "none";
	document.getElementById("bezaras").style.display = "none";
	document.getElementById("kep").style.backgroundImage = "url('')";
	// ha van video, azt ujra elohozzuj, amikor a galéria eltunik
	if (document.getElementById("video")) {
		document.getElementById("video").style.display = "block";
	}
}