//******************************************************
//		SCRIPT PRO zmenu fotek pomoci previous a next
//******************************************************
function ChangePhoto(next) {
	var div = 'slideshow'
	var position

	if(next==1) {
		if(j < nMax) {
			position = j + 1
		} else {
			position = 0
		}
	} else {
		if(j > 0) {
			position = j - 1
		} else {
			position = nMax
		}
	}
	
	j = position
	LoadPhoto(div, position)
	clearTimeout(timer);
	timer = setTimeout('PictureHide()',10000);
}


//******************************************************
//		SCRIPT PRO UVODNI STRANKU
//******************************************************
function ViewPhoto(Folder, Name) {
	Photo = document.getElementById('TitlePhoto')
	Photo.innerHTML = '<img src="/data/images/'+Folder+'/detail/'+Name+'.jpg" alt="" width="380" border="1" />'
}


//******************************************************
//		SCRIPT PRO DETAIL ZEME
//******************************************************
// pocatecni spusteni
function onLoad() {
	objActual = document.getElementById('slideshow')
	LoadPhoto('slideshow', i)
	PhotoPortrait()
}
// vyber dalsi fotky
function Random() {
	j=Math.round(Math.random()*nMax);
	if (i == j && nMax > 2) {Random()}
	LoadPhoto('slideshow_under', j)
}
// nacteni fotky do divu
function LoadPhoto(div, counter) {
	document.getElementById(div).innerHTML = '<a href="javascript:foto(\'/data/images/'+aFolder[counter]+'/big/'+aFileName[counter]+'.jpg\')"><img src="/data/images/'+aFolder[counter]+'/detail/'+aFileName[counter]+'.jpg" border="1" alt="" id="photoportrait" /></a>';
	if (aPhotoAuthor[i]!='') document.getElementById('photoauthor').innerHTML = '<small>by </small>' + aPhotoAuthor[counter];
	document.getElementById('photoname').innerHTML = aPhotoName[counter]
}
// prodleva pred zobrazenim dalsim fotky 
function PhotoPortrait() {
	timer = setTimeout('PictureHide()',10000);
}
// postupne zmizeni fotky
function PictureHide() {
	if (objActual) {
		if (display_timer) {clearInterval(display_timer);}
		display_i = 100;
		display_timer = setInterval("hide()",100)
	}
}
// postupne zmizeni fotky
function hide() {
	display_i -= 5;
	if (display_i < 0) {display_i = 0}
	else if (display_i==95) {Random()}
	setOpacity(objActual, display_i)
	
	if (display_i==0) {
		clearInterval(display_timer)
		setOpacity(objActual, 100)
		i = j
		LoadPhoto('slideshow', i)
		PhotoPortrait()
	}
}
// nastaveni pruhlednosti
function setOpacity(obj, opacity) {
	obj.style.filter = "alpha(opacity:"+opacity+")";
	obj.style.KHTMLOpacity = opacity/100;
	obj.style.MozOpacity = opacity/100;
	obj.style.opacity = opacity/100;
}