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

var d = document;
var image_container = "galerie_bild";
var pause_container = "pauseContainer";
var pause_button = "fileadmin/template/img/button_pause.gif";
var play_button = "fileadmin/template/img/button_play.gif";
var imgs = new Array;
var current = 0;
var pause = false;
var fade_interval = 10;
var fade_step = .05;
var html = "";

function init()
{
	if (!d.getElementById || (d.getElementById && !d.getElementById(image_container)) || !d.createElement || html=="")
	{
		return;
	}
	
	d.getElementById(image_container).innerHTML = html;
	
	imgs = d.getElementById(image_container).getElementsByTagName("img");
	
	for (i=0;i<imgs.length;i++)
	{
		imgs[i].xOpacity = 0;
	}
	
	imgs[current].style.display = "block";
	imgs[current].xOpacity = .99;
	
	if (!pause)
	{
		setTimeout(crossfade,3000);
		pauseButton("pause");
	}
	else
	{
		pauseButton("play");
	}
}

function crossfade()
{
	if (pause)
	{
		return;
	}
	
	cOpacity = imgs[current].xOpacity;
	//nIndex = imgs[current+1]?current+1:0;
	nIndex = (current < (items-1)) ? current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity -= fade_step; 
	nOpacity += fade_step;
	
	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;
		setTimeout(crossfade,3000);
	}
	else
	{
		setTimeout(crossfade, fade_interval);
	}	
}

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 doPause()
{
	if (pause)
	{
		pause = false;
		document.getElementById("pause_button").src = pause_button;
		document.getElementById("pause_button").alt = 'Pause';
		crossfade();
	}
	else
	{
		pause = true;
		document.getElementById("pause_button").src = play_button;
		document.getElementById("pause_button").alt = 'Play';
	}
}

function pauseButton(state)
{
	img = d.createElement("img");
	img.id = "pause_button";
	img.src = (state == "play") ? play_button : pause_button;
	img.alt = 'Pause';
	img.border = 0;
	img.width = 30;
	img.height = 30;
	img.style.display = 'inline';
	img.style.position = 'relative';
	img.onclick = function(){doPause(); this.blur(); return;}
	
	d.getElementById(pause_container).appendChild(img);	
	d.getElementById(image_container).appendChild(d.getElementById(pause_container));
}