/***************************************************************
*  This copyright notice MUST APPEAR in all copies of the script!
*
*  Based on:
*  Image Cross Fade Redux
*  Version 1.0
*  Last revision: 02.15.2006
*  steve@slayeroffice.com
***************************************************************/


window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);

var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;

var DoSlide = 1, pIndex = 0;
var back = 0;
// Interval in Millisekunden
var slideinterval = 2000;
var countdown = slideinterval;

function so_init() {
	var maindb = top.document.getElementById('mainDBName').value;
	if(!d.getElementById || !d.createElement) return;
	css = d.createElement("link");
	css.setAttribute("href","/" + maindb + "/net/slideshow/style.css");
	css.setAttribute("rel","stylesheet");
	css.setAttribute("type","text/css");
	d.getElementsByTagName("head")[0].appendChild(css);

	imgs = d.getElementById("imageContainer").getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	//setTimeout(so_xfade,4000);
	timoutcontrol();
}



function timoutcontrol(){
	countdown = countdown-50;
	if(countdown<=0){
		setTimeout(so_xfade,1);
	}
	setTimeout(timoutcontrol,50);
	//document.getElementById('counter').innerHTML = countdown+' ('+current+')';
}


function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	if(back==1){
		nIndex = imgs[current-1]?current-1:0;
	}else{
		nIndex = imgs[current+1]?current+1:0;
	}
	

	nOpacity = imgs[nIndex].xOpacity;
	
	if(DoSlide==1) cOpacity-=.05; 
	if(DoSlide==1) nOpacity+=.05;
	
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]); 
	setOpacity(imgs[nIndex]);
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		current = nIndex;
		pIndex = -2;
		back = 0;
		//setTimeout(so_xfade,4000);
		countdown = slideinterval;
	} else {
		//setTimeout(so_xfade,50);
	}
	
	function setOpacity(obj) {
		if(obj.xOpacity>.99) {
			obj.xOpacity = .99;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	}
	
}

function goLeft(){
	back = 1;
	countdown = -5;
}
function goRight(){
	countdown = -5;
}
function StopStartToggle(){
	var maindb = top.document.getElementById('mainDBName').value;
	if(DoSlide==0){
		DoSlide = 1;
		document.getElementById('playpause').src = "/" + maindb + "/net/slideshow/pause.png";
		return false;
	}
	if(DoSlide==1){
		DoSlide = 0;
		document.getElementById('playpause').src = "/" + maindb + "/net/slideshow/play.png";
	}
}

function show(id){
	document.getElementById(id).style.display = "block";
}
function hide(id){
	document.getElementById(id).style.display = "none";
}