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;
//	groesse();
}
function show(feld, wert){
	document.getElementById(feld).style.display=wert;
//	groesse();
}
function groesse() {
	var dynheight_left = document.getElementById("content-links").offsetHeight;
	var dynheight_right = document.getElementById("rechte-spalte").offsetHeight;
	if (dynheight_left > dynheight_right){
		dynheight=dynheight_left -5;
	}
	else{
		dynheight=dynheight_right;
	}
	//alert("groesse");
	document.getElementById("content-links").style.height=dynheight+"px";
	document.getElementById("rechte-spalte").style.height=dynheight+"px";
}
function fenster(breite, hoehe){
	self.resizeTo(breite, hoehe);
}
function show_bild(bildklein, bildgross, wert){
	var oben;
	var breitebody=document.body.clientWidth;
	var linkeseite;
	var links;
	var breitestreifen = parseInt((breitebody - 960) / 2);
	var abstand_content=parseInt((breitebody-960)/2);

	document.getElementById(bildgross).style.display=wert;
	oben=document.getElementById(bildklein).offsetTop;
	oben=oben-3;
	links=document.getElementById(bildklein).offsetLeft;
	if (navigator.appName.indexOf("Explorer") > -1){
		links=breitestreifen + 40;
		oben = oben + 218;
		document.getElementById(bildgross).style.top = oben+"px";
		document.getElementById(bildgross).style.left = links+"px";
	}
	else {
		document.getElementById(bildgross).style.top = oben+"px";
		document.getElementById(bildgross).style.left = links+"px";
	}
}
function openwinvideo (url, breite, hoehe){
	begriff = window.open(url,"popup","top=30,left=50,toolbar=no,width="+breite+",height="+hoehe+",directories=no,status=no,scrollbars=no,resize=no,menubar=no");
	begriff.focus();
	return;
}
function hide_allvideos(feldname,num){
	//feldname=feld+nummer;
	for (i=0; i< num; i++){
		feld=feldname+i;
		document.getElementById(feld).style.display='none';
	}
}