function teste() {
	if(document.getElementById('comentario').style.display == 'none') {
		document.getElementById('comentario').style.display='block';
	}
	else {
		document.getElementById('comentario').style.display='none';
	}
}
    var pagina = document.URL;
    document.write("<center><a href='../../../login/login.php?pagina="+ pagina +"' target='_top'><span style='font-size: 10pt; color:#FFFFFF; background-color: #7AB0D8; padding: 0px 10px 0px 10px;'>Inserir novo comentário</span></a></center>");
    document.write("<div id='comentario' style='display: none; margin: auto;'>");