function showDetail(id) {
 	if(document.getElementById(id).style.display=='none') {
 		document.getElementById(id).style.display = 'block';
 		document.getElementById('arrow_'+id).style.background = 'transparent url(fileadmin/templates/images/arrow-up.gif) no-repeat';
	}
 	else {
 		document.getElementById(id).style.display = 'none';
 		document.getElementById('arrow_'+id).style.background = 'transparent url(fileadmin/templates/images/arrow-down.gif) no-repeat';
	}
}