function changeKat(nr){
	var elDisplay = document.getElementById("kategorie_"+nr).style;
  elDisplay.display = (elDisplay.display == "none") ? "block" : "none";
  var linkBut = document.getElementById("link_"+nr);
  linkBut.className = (linkBut.className == "kat_auf") ? "kat_zu" : "kat_auf";
}



	




function showDetails(nr){
	var oh = document.getElementById("overlay").offsetHeight;
	if (oh<10){
		oh=600;
	}
	
	var mt = (oh - 500)/4;
	mt=50;
	
	h = document.getElementById("container").offsetHeight;

	document.getElementById("overlay").innerHTML='<div id="black" style="height:'+h+'px;"></div>';
	document.getElementById("ecard").innerHTML='<div id="ecard_wrap"><div class="mediathek_detail" style="margin-top:'+mt+'px"><div id="wrapper"><div id="motiv"></div><div id="info"></div></div></div></div>';
	setMotiv(nr);
	setInfo(nr);
}


function setMotiv(nr){
	document.getElementById("motiv").innerHTML='<img src="'+eval("img_"+nr)+'" width="'+eval("imgW_"+nr)+'" height="'+eval("imgH_"+nr)+'"/><p style="width:'+eval("imgW_"+nr)+'px">'+eval("caption_"+nr)+'</p>';
}


function setInfo(nr){
	var schliessen = '<a href="mediathek.html" class="schliessen" alt="Schließen" title="Schließen"></a>';
	var title = '<h2>'+eval("title_"+nr)+'</h2>';
	var desc = '<p>'+eval("desc_"+nr)+'</p>';
	var size = 'Dateigröße: '+eval("size_"+nr)+',<br />';
	var format = 'Dateiformat: '+eval("format_"+nr)+',<br />';
	var datum = 'Datum: '+eval("datum_"+nr)+',<br />';
	var bildgr = 'Bildgröße: '+eval("dimensions_"+nr);
	var loc = '<p>Location: '+eval("loc_"+nr)+'</p>';
	var keyw = '<p>Keywords: '+eval("keyw_"+nr)+'</p>';
	var copy = '<p>'+eval("copy_"+nr)+'</p>';
	var idnr = '<p>'+eval("identNr_"+nr)+'</p>';
	var download = '<a href="mediathek.html?fid='+nr+'">->Download</a>';
	document.getElementById("info").innerHTML = schliessen+title+desc+'<p></p>'+keyw+loc+'<p>'+datum+size+format+bildgr+'</p>'+copy+idnr+download;
	document.getElementById("info").style.width=eval(650-40-eval("imgW_"+nr))+"px";
}

function closeDetails(){
	document.getElementById("overlay").innerHTML='';
	document.getElementById("ecard").innerHTML='';
}