function alterarEstilo(){
	var nav=navigator.userAgent.toLowerCase();
	var isGecko=(nav.indexOf("gecko")!=-1);
	if (!isGecko){
		var links = document.getElementsByTagName("link");
		for(var i=0; i<links.length; i++){
			if(links[i].getAttribute("title") == "firefox"){
				links[i].disabled = true;
			}
		}
	}
}

function exibe(id){
	document.getElementById("principal").style.display="none";
	document.getElementById("programa").style.display="none";
	document.getElementById("cursos").style.display="none";
	document.getElementById("localidades").style.display="none";
	document.getElementById("contatos").style.display="none";
	document.getElementById("noticia").style.display="none";
	
	document.getElementById(id).style.display="block";
}

function cursos(id){
	var operar = document.getElementById(id);
	if(operar.style.display!="block"){
		document.getElementById("internet").style.display="none";
		document.getElementById("excel").style.display="none";
		document.getElementById("powerpoint").style.display="none";
		document.getElementById("word").style.display="none";
		document.getElementById("windows").style.display="none";
		document.getElementById("livre").style.display="none";
		document.getElementById("calc").style.display="none";
		document.getElementById("impress").style.display="none";
		document.getElementById("empreendedorismo").style.display="none";
		document.getElementById("artesanato").style.display="none";
		document.getElementById("cidadania").style.display="none";
		document.getElementById("turismo").style.display="none";
		
		operar.style.display="block";
		}
	else{
		operar.style.display="none";
	}
}