onExt = "_on.jpg";
	offExt = "_off.jpg";

	FirstNavImg = 1;
	NavImgCount = 72;
	
	function on(imgName){
		document.getElementById(imgName).src = "/img/live_portfolio/klein/"+ imgName + onExt;
		document.getElementById('gross').src = "/img/live_portfolio/gross/"+ imgName +".jpg";
		
		zahl = imgName.substring(5,7) * 1;
		document.getElementById('texte').innerHTML = pic_text[zahl - 1];
 	}
	
	function off(imgName) {
		nummer = document.welche.bild.value;
		zahl = nummer.substring(5,7) * 1;
		
		if(document.welche.bild.value == ""){
			document.getElementById(imgName).src = "/img/live_portfolio/klein/"+ imgName + offExt;
			document.getElementById('gross').src = "/img/logo_mitte.gif";
			document.getElementById('texte').innerHTML = '';
		}else{
			if(nummer == imgName){
				
			}else{
				document.getElementById(imgName).src = "/img/live_portfolio/klein/"+ imgName + offExt;
				document.getElementById('gross').src = "/img/live_portfolio/gross/"+ nummer +".jpg";
				document.getElementById('texte').innerHTML = pic_text[zahl - 1];
			}
		}
	}
	
	function klick(imgName) {
		akt_bild = document.welche.bild.value;
		zahl = imgName.substring(5,7) * 1;
		//document.getElementById(imgName).selected = true;
		if(akt_bild != ""){
			document.getElementById(akt_bild).src = "/img/live_portfolio/klein/"+ akt_bild + offExt;
		}
		document.welche.bild.value = imgName;
		on(imgName);
	}