function popdetail(id) {
	var desc_id = 'desc_'+id; //description
	var pic_id = 'pic_'+id; // plus/minus icon
	
	if(document.getElementById(desc_id).style.display == 'none') {
		document.getElementById(desc_id).style.display = 'inline';
		document.getElementById(pic_id).src = 'fileadmin/dks/images/minus.gif';
	}
	else {
		document.getElementById(desc_id).style.display = 'none';	
		document.getElementById(pic_id).src = 'fileadmin/dks/images/plus.gif';
	}
}