var bSlide = false;
var iBildNr = 0;
var iBildCnt = 0;
var iEbene = 2;
var iSchrittweite = 2;
var iGeschwindigkeit = 20;	//Millisekunden der Pause
var iZeitintervall = 4000;	//Millisekunden
var MyTimeout;
var sObjekt1;
var sObjekt2;
var opacity;
var tAktiv;
var TypUeberblendung = false;	//false: Hintergrund bleibt auf 100%; true: Hintergrund faded von 100% auf 0% sodass der Hintergrund durchscheint

//Sofern Firefox-Browser dann beschleunige den Vorgang um das doppelte
var ua = navigator.userAgent;
if(ua.indexOf("Firefox") >=0) {
	iSchrittweite *= 2;
}

function effekt(opacity){
	if (bSlide){
		//alert(opacity);
		if (TypUeberblendung){
			sObjekt1.style.filter = "alpha(opacity="+ opacity +")";
		} else {
			sObjekt1.style.filter = "none";		//"alpha(opacity=100)";  //Filter auf "none setzten da ansonsten die IE-Fehlerhaften Pixel zu deutlich sichtbar sind
		}
		(opacity < 10)?x="0.0"+opacity:x="0."+opacity;
		if(opacity >= 100){x="1.0";}
		sObjekt1.style.MozOpacity = x;
		sObjekt1.style.opacity = x;
		sObjekt2.style.filter = "alpha(opacity="+ (100-opacity) +")";
		x = 100 - opacity;
		x = x / 100;
		sObjekt2.style.MozOpacity = x;
		sObjekt2.style.opacity = x;
		if (opacity < 100){			
			setTimeout('effekt('+ (opacity+iSchrittweite) +')',iGeschwindigkeit);
		} else {
			if (bSetCnt){
				document.getElementById('ecardBildCnt').value = ArrayEcard[iNewBildNr][1];
			}		
			sObjekt1.style.filter = "none";
			sObjekt2.style.filter = "none";
			sObjekt1.style.zIndex = 2;
			sObjekt2.style.zIndex = 1;
			sObjekt2.style.visibility = "hidden";
		}
	}
}
		function changeImage(){
	if (bSlide){
		iMaxNr = ArrayEcard.length;
		if (iBildNr >= iMaxNr-1){
			iNewBildNr = 0;
			iBildNr = 0;
		} else {
			iNewBildNr = ++iBildNr;
		}
		iEbene2 = iEbene + 1;
		if (iEbene2==3){iEbene2 = 1;}
	
		//alert(iNewBildNr +' '+iBildNr+' - '+iMaxNr);
		sObjekt1 = document.getElementById('foto_center'+iEbene);	//anzuzeigen
		sObjekt2 = document.getElementById('foto_center'+iEbene2);	//auszublenden
		sObjekt1.style.zIndex = 1;
		//MM_swapImage('bild_slideshow'+iEbene,'',ArrayEcard[iNewBildNr][0],1);	//Bild wechseln
		document.getElementById('bild_slideshow'+iEbene).src = ArrayEcard[iNewBildNr][0];
		document.getElementById('bild_slideshow'+iEbene).title = ArrayEcard[iNewBildNr][2];
		sObjekt1.style.filter = "alpha(opacity=0)";
		sObjekt1.style.MozOpacity = "0.0";
		sObjekt1.style.opacity = "0.0";
		sObjekt1.style.visibility = "visible";
		
		sObjekt2.style.zIndex = 2;
		sObjekt2.style.filter = "alpha(opacity=100)";
		sObjekt2.style.MozOpacity = "1.0";
		sObjekt2.style.opacity = "1.0";
		sObjekt2.style.visibility = "visible";
		
		effekt(0);
		
		iEbene++;
		if (iEbene==3){iEbene = 1;}
		tAktiv = setTimeout('changeImage()', iZeitintervall);
	}
}
		
		
		
		function MM_preloadImages() { 
			var d=document; 
			if(d.images){ 
				if(!d.MM_p) 
					d.MM_p=new Array(); 
				var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
				for(i=0; i<a.length; i++)
					if (a[i].indexOf("#")!=0){ 
						d.MM_p[j]=new Image;
						d.MM_p[j++].src=a[i];
					}
			}
		}



// Browser detection script

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();