function changeGalImg(obj) {
	obj.blur();
	s1 = obj.firstChild.src.toLowerCase();
	s2 = s1.split('/images/');
	s3 = 'images/'+s2[1];
	s4  = s3.split('_tn');
	s5 = s4.join('');
	setzeBild(s5);
	setzeSubtitle(s5);
	return false;
}

function startBildFestlegen(shift) {
	if (typeof(shift)=='undefined') shift = 0;
	s1 = document.getElementById('galerie').innerHTML.toLowerCase();
	s2 = s1.split(' src="');
	s3 = s2[1+shift].split('_tn');
	s4 = s3[0]+'.jpg';
	setzeBild(s4);
	setzeSubtitle(s4);
}

function setzeBild(pfad) {
	document.getElementById('detailbild').style.backgroundImage = 'url('+pfad+')';
}

function setzeSubtitle(pfad) {
	if (getSubtitle(pfad)==-1)
		setzeSubtitleText('');
	else
		setzeSubtitleText(subtitles[getSubtitle(pfad)][1]);
}

function setzeSubtitleText(txt) {
	document.getElementById('subtitle').innerHTML = txt;
}