var csid = '';

function toggleSection ( sid )
{
	try {
		if ( csid != '' || csid == sid )
			document.getElementById ( csid ).style.display = 'none';
		document.getElementById ( sid ).style.display = 'block';
		csid = sid;
	}
	catch ( e ) {
		;
	}
}

function toggleSectionAndPoem ( sid, pid )
{
	toggleSection ( sid );
	document.getElementById ( pid ).className = 'left-menu-poem-current';
}