ÿþfunction aha_slideshow(img, anzshow, fadetime){

	this.anzshow = anzshow;

	this.imgA = img; 

	if (fadetime == 0){

		this.opacityStep = 100;

	} 

	else {

		this.opacityStep = 100 / (fadetime / 50);

	}

	this.shown = "A";

	//this.imgSrcNext;

	this.picFirst = this.imgA.src;

	this.dnArr = ahaSplitDn(this.picFirst);

	this.numFirst = parseInt(this.dnArr[1], 10);

	this.dsPos = 0;

	this.aktiv = 0;

	this.createMirror = aha_slideshow_createMirror;

	this.start = aha_slideshow_start;

	this.stop = aha_slideshow_stop;

	this.startStop = aha_slideshow_startStop;

	this.showPos = aha_slideshow_showPos;

	this.next = aha_slideshow_next;

	this.showNext = aha_slideshow_showNext;

	this.prev = aha_slideshow_prev;

	this.showPrev = aha_slideshow_showPrev;

	this.display = aha_slideshow_display;

	this.registerControl = aha_slideshow_registerControl;	

	this.showThumb = aha_slideshow_showThumb;

	this.fade = aha_slideshow_fade;

	this.opacityA = 100;

	this.mirror = 0;

	this.controlShow = 0;

}

function aha_slideshow_createMirror(){

	this.mirror = 1

	this.opacityB = 0;

	this.parent = this.imgA.parentNode;

	this.parent.style.position = "relative";

	this.imgB = this.imgA.cloneNode(true);

	this.imgB.style.position = "absolute";

	this.imgB.style.left = this.imgA.offsetLeft +'px';

	this.imgB.style.top = this.imgA.offsetTop +'px';

	ahaSetOpacity(this.imgB, 0);

	this.parent.appendChild(this.imgB);

}

function aha_slideshow_registerControl(img, fadetime){

	this.controlShow = aha_makeSlideshow(img, 2, fadetime, 0, 0);

}

function aha_slideshow_start(inter){

	this.stop();

	var call = "document.getElementById('" + this.imgA.id + "').aha_slideshow.showNext()";

	this.showNext();

	this.aktiv = window.setInterval(call, inter);

	if (this.controlShow && this.aktiv){this.controlShow.next();}

}

function aha_slideshow_stop(){

	window.clearInterval(this.aktiv);



	if (this.controlShow && this.aktiv){this.controlShow.next();}

	this.aktiv = 0;	

}

function aha_slideshow_startStop(inter){

	if (!this.aktiv){

		this.start(inter);

		return 1;

	}

	this.stop();

	return 0;

}

function aha_slideshow_prev(){

	this.stop();

	this.showPrev();

}

function aha_slideshow_next(){

	this.stop();

	this.showNext();

}

function aha_slideshow_showThumb(img){

	this.stop();

	var dnArr = ahaSplitDn(img.src);

	this.dsPos = dnArr[1] - this.numFirst;

	this.display();

}

function aha_slideshow_showPos(pos){

	//alert("hi");

	this.stop();

	this.dsPos = pos;

	this.display();

}	

function aha_slideshow_showPrev(){

	this.dsPos--;

	if (this.dsPos < 0){

		this.dsPos = this.anzshow - 1;

	}

	this.display();

}

function aha_slideshow_showNext(){

	this.dsPos++;

	if (this.dsPos >= this.anzshow){

		this.dsPos = 0;

	}

	this.display();

}

function aha_slideshow_display(){

	var neuNum = String(this.numFirst + this.dsPos + 1000000).substr(7-this.dnArr[1].length, this.dnArr[1].length);

	if (this.shown == "A" && this.mirror){

		this.opacityB = 0;

		this.shown = "B";

		this.imgB.src = this.dnArr[0] + neuNum + this.dnArr[2];

	}

	else{

		//this.opacityA = 0;

		this.shown = "A";

		if(this.mirror || (this.opacityStep == 100)){

			this.imgA.src = this.dnArr[0] + neuNum + this.dnArr[2];

			this.opacityA = 0;

		}

		else{this.imgSrcNext = this.dnArr[0] + neuNum + this.dnArr[2];}

	}

	this.fade();

}

function aha_slideshow_fade(){

	var lastCall = 1;

	if(this.shown == "B"){

		if (this.opacityA > 0){

			lastCall = 0;

			this.opacityA = this.opacityA - this.opacityStep;

			if (this.opacityA < 0){this.opacityA = 0;}

		}

		if (this.opacityB <  100){

			lastCall = 0;

			this.opacityB = this.opacityB + this.opacityStep;

			if (this.opacityB > 100){this.opacityB = 100;}

		}

	}

	else{

		if (this.opacityB > 0 && this.mirror){

			lastCall = 0;

			this.opacityB = this.opacityB - this.opacityStep;

			if (this.opacityB < 0){this.opacityB = 0;}

		}

		if (this.opacityA <  100 || this.imgSrcNext){

			lastCall = 0;

			var opacityGo = this.opacityStep;

			if(!this.mirror){opacityGo = (opacityGo * 2) }

			if(this.imgSrcNext){

				opacityGo = (opacityGo * -1);

				if(this.opacityA <= 0){

					this.imgA.src = this.imgSrcNext;

					this.imgSrcNext = 0;

					this.opacityA = 0;

				}

			}

			this.opacityA = this.opacityA + opacityGo;

			if (this.opacityA > 100){this.opacityA = 100;}

		}

	}

	ahaSetOpacity(this.imgA, this.opacityA);

	if (this.mirror){ahaSetOpacity(this.imgB, this.opacityB);}

	if (!lastCall){

		setTimeout("document.getElementById('" + this.imgA.id + "').aha_slideshow.fade()", 50);

	}	

}

function aha_makeSlideshowById(id, anzShow, fadetime){

	return aha_makeSlideshow(document.getElementById(id), anzShow, fadetime, 1, 0);

}

function aha_startSlideshowById(id, anzShow, fadetime, changetime){

	return aha_makeSlideshow(document.getElementById(id), anzShow, fadetime, 1, changetime);

}



function aha_makeSlideshow(img, anzShow, fadetime, mirror, changetime){

	img.aha_slideshow = new aha_slideshow(img, anzShow, fadetime);

	if(mirror){img.aha_slideshow.createMirror();}

	if(changetime){setTimeout('document.getElementById("' + img.id +'").aha_slideshow.start('+ changetime +')', changetime - (fadetime / 2));}	

	return img.aha_slideshow;

}



function aha_startStop(id, ds, changetime, strStart, strStop){

	var a = document.getElementById(id);

	if (ds.startStop(changetime)){

		a.innerHTML = strStop;

	}

	else{

		a.innerHTML = strStart;

	}

}

function aha_startStopImg(img, ds, changetime, srcStart, srcStop){

	//var a = document.getElementById(id);

	if (ds.startStop(changetime)){

		img.src = srcStop;

	}

	else{

		img.src = srcStart;

	}

}

function aha_startStopImgSet(img, ds, srcStart, srcStop){

	//var a = document.getElementById(id);

	if (ds.aktiv){

		img.src = srcStop;

	}

	else{

		img.src = srcStart;

	}

}



function ahaSetOpacity(img, opacity){

	img.style.opacity = (opacity / 100); 

	img.style.filter  = "alpha(opacity=" + opacity  + ")";

}



function ahaIsNumber(c){

	if ( (c >= 0) && (c <= 9)){ 

		return 1;

	}

	return 0;

}

function ahaSplitDn(dn){

	var dnArr = new Array(3);

	var posPoint = dn.lastIndexOf(".");

	var i = 1;

	dnArr[2] = dn.substring(posPoint, dn.length);

	for (i = 1; ahaIsNumber(dn.substr(posPoint - i, 1)) && i < posPoint && i < 7 ;i++){} 

	dnArr[1] = dn.substr(posPoint - i+1, i-1);

	dnArr[0] = dn.substr(0, dn.length - dnArr[1].length - dnArr[2].length);

	return dnArr;

}