function initSlider() {
	var scroller = new Bs_ScrollableDiv();
	scroller.init('divScrollTextCont', 'divText');
	
  var sliderObj = new Bs_Slider();
	sliderObj.width          = 11;
	sliderObj.height         = 'auto';
	sliderObj.arrowMouseOver = true;
	sliderObj.valueDefault   = 0;
	sliderObj.direction      = 1;
	//sliderObj.imgDir         = '/img/scroll/';
	sliderObj.imgDir         = '/img/scroll2/';
	sliderObj.setBackgroundImage('scrollbar.gif', 'repeat-y', 'left:5px;');
	sliderObj.setSliderIcon('knob.gif', 11, 33);
	sliderObj.setArrowIconLeft('up.gif', 11, 11);
	sliderObj.setArrowIconRight('down.gif', 11, 11);
	
	scroller.setSliderObject(sliderObj, 'sliderDiv');
	scroller.setSlideSpeed(200, 'pixel'); //200 pixel per second
	scroller.setWheelSpeed(50, 'pixel');  //50 pixel per tick
}

function toggleSpeaker() {
	if (!document.getElementById) return;
	var href = document.getElementById('hrefToogleSpeaker');
	if (!speakerIsOn) {
		var img = 'on';
		var txt = 'Ton ist an';
		setCookie('speakerIsOn', 1);
		speakerIsOn = true;
	} else {
		var img = 'off';
		var txt = 'Ton ist aus';
		setCookie('speakerIsOn', 0);
		speakerIsOn = false;
	}
	href.innerHTML = '<img src="/img/audio_' + img + '.gif" alt="" border="0" align="texttop"> ' + txt;
	location.reload();
}