<!--
function abre_revista(){
	if(document.getElementById("revista").style.display == 'none'){
		document.getElementById("revista").style.display = 'block';
		document.getElementById("curso").style.display = 'none';
		document.getElementById("cur").style.backgroundImage = "url(imagens/cursos.gif)";
		document.getElementById("rev").style.backgroundImage = "url(imagens/revista_on.gif)";
	} else {
		document.getElementById("revista").style.display = 'none';
		document.getElementById("rev").style.backgroundImage = "url(imagens/revista.gif)";
	}
}

function abre_curso(){
	if(document.getElementById("curso").style.display == 'none'){
		document.getElementById("curso").style.display = 'block';
		document.getElementById("revista").style.display = 'none';
		document.getElementById("rev").style.backgroundImage = "url(imagens/revista.gif)";
		document.getElementById("cur").style.backgroundImage = "url(imagens/cursos_on.gif)";
	} else {
		document.getElementById("curso").style.display = 'none';
		document.getElementById("cur").style.backgroundImage = "url(imagens/cursos.gif)";
	}
}
-->