function open_song(id) { 
	if($(id).style.display == 'none') close_others(id); 
	toggle(id,'blind'); 
}

function close_others(id) { 
	var els = getElementsByTagAndClassName("TABLE","song"); 
	for(var i=0; i < els.length; i=i+1) { 
		if( (els[i].id != id) && els[i].style.display != "none") toggle(els[i].id, 'blind'); 
	} 
}