function showlink(show,hide) {
	if(document.getElementById) {
		document.writeln('<span>[<a href="javascript:linkwechsel()" class="internal">' +
		'<span id="zeigelink"  style="display:none;color:#000000;">' + show + '</span>' +
		'<span id="versteckelink" style="color:#000000;">' + hide + '</span>'
		+ '</a>]</span>');
	}
}
function linkwechsel() {
	var toc = document.getElementById('inhalt');
	var zeigelink=document.getElementById('zeigelink');
	var versteckelink=document.getElementById('versteckelink');
	if(toc.style.display == 'none') {
		toc.style.display = "block";
		versteckelink.style.display='none';
		zeigelink.style.display='';

	} else {
		tocWas = toc.style.display;
		toc.style.display = 'none';
		versteckelink.style.display='';
		zeigelink.style.display='none';
	}
}