function change(Bildname, Dateiname) {

   if (document.images) {
      document.images[Bildname].src = Dateiname }
}
function winopen(url, width, height)
{
	if (height == null)
	{
		height = "550";
	}
	begriff = window.open(url,"_blank","top=30,left=50,toolbar=no,width="+width+",height="+height+",directories=no,status=no,scrollbars=yes,resize=no,menubar=no");
	begriff.focus();
	return;
}
function $(feld, wert){
	document.getElementById(feld).style.display=wert;
}
function show(feld, wert){
	document.getElementById(feld).style.display=wert;
}
function groesse() {
	var breite_body;
	breite_body=document.body.clientWidth;
	var breite_ganz=parseInt((breite_body-994)/2);
	if (navigator.appName.indexOf("Explorer")){
		if(navigator.appVersion.indexOf("MSIE 6")>-1){
			document.getElementById("navi-gen").style.top="85px";
			//alert("top: "+document.getElementById("navi-gen").style.top);
		}
		else{
			document.getElementById("navi-gen").style.top="88px";
			//alert("top: "+document.getElementById("navi-gen").style.top);						
		}
	}
	if (breite_body <= 994){
		var breite = 663;						
	}
	else{
		var breite = breite_ganz+663;
	}
	//alert("Breite "+ breite);
	document.getElementById("navi-gen").style.left=breite+"px";
}