function aufklappen(id) {
   //msgbox "id";
	//var span = document.getElementById('rowspan_'+id).getAttribute('rowspan',0);
	var visible = document.getElementById('sitemap_'+id).style.display;

	if(visible == "none") {
      //(span == 1 || span == "1" || span == null) &&
		//document.getElementById('rowspan_'+id).setAttribute('rowspan',"2",0);
		document.getElementById('sitemap_'+id).style.display = '';
	}
	else {
		//document.getElementById('rowspan_'+id).setAttribute('rowspan',"1",0);
		document.getElementById('sitemap_'+id).style.display = 'none';
	}

}