//	Browsercheck (needed)
	function lib_bwcheck() {
		this.ver=navigator.appVersion;
		this.agent=navigator.userAgent;
		this.dom=document.getElementById?1:0;
		this.opera5=this.agent.indexOf("Opera 5")>-1;
		this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
		this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
		this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
		this.ie=this.ie4||this.ie5||this.ie6;
		this.mac=this.agent.indexOf("Mac")>-1;
		this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
		this.ns4=(document.layers && !this.dom)?1:0;
		this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5);
		return this;
	}
	
//	replace image
	var bw = new lib_bwcheck();
	
	function set_image(name, url) {
		var img = document.images[name];
		if(img){
		  img.src = url;
		}
	}
	
//	Drucken for Dummies
	function print_it(url) {
		  window.top.gedruckt = "nein";
		  var opener = window.open(url, "drucken", "width=611,height=500,center,scrollbars=yes,status=no,toolbar=yes,resizable=no");
	}
	
//	function to 'activate' images.
	function imgOn(imgName) {
		if (preloaded) {
			document[imgName].src = eval(imgName + "on.src");
		}
	}
	
//	function to 'deactivate' images.
	function imgOff(imgName) {
		if (preloaded) {
			document[imgName].src = eval(imgName + "off.src");
		}
	}
	
//	Funktionen zum Layeraustausch
	var theActive = false;
	
	function showlayer(name) {
		if (theActive)	{ hidelayer(theActive); }
		
		if (bw.ns6)		{ document.getElementById(name).style.visibility = "visible"; }
		else if(bw.ns4)	{ document[name].visibility = "show"; }
		else if(bw.ie)	{ eval('document.all["'+name+'"].style.visibility = "visible"'); }
		
		theActive = name;
	}
	
	function hidelayer(name) {
		if(bw.ns6)		{ document.getElementById(name).style.visibility = "hidden"; }
		else if(bw.ns4)	{ document[name].visibility = "hide"; }
		else if(bw.ie)	{ document.all[name].style.visibility = "hidden"; }
	}