function mudaIdioma(n){
	idioma = n;
	mostra(lastn);
	if (idioma==1){
		document.getElementById("lk1").innerHTML='Início';
		document.getElementById("lk2").innerHTML='Artigos';
		document.getElementById("lk3").innerHTML='Palestras';
		document.getElementById("lk4").innerHTML='Sites';
		document.getElementById("lk5").innerHTML='Carreira';
		}
	else{
		document.getElementById("lk1").innerHTML='Home';
		document.getElementById("lk2").innerHTML='Papers';
		document.getElementById("lk3").innerHTML='Lectures';
		document.getElementById("lk4").innerHTML='Sites';
		document.getElementById("lk5").innerHTML='Career';
		}
	}

	
function mostra(n){
	lastn=n;
	document.getElementById("div1"+"_1").style.visibility='hidden';
	document.getElementById("div2"+"_1").style.visibility='hidden';
	document.getElementById("div3"+"_1").style.visibility='hidden';
	document.getElementById("div4"+"_1").style.visibility='hidden';
	document.getElementById("div5"+"_1").style.visibility='hidden';
	document.getElementById("div1"+"_2").style.visibility='hidden';
	document.getElementById("div2"+"_2").style.visibility='hidden';
	document.getElementById("div3"+"_2").style.visibility='hidden';
	document.getElementById("div4"+"_2").style.visibility='hidden';
	document.getElementById("div5"+"_2").style.visibility='hidden';
	document.getElementById("menu1").style.backgroundImage="url(mgar_imagens/bot1.jpg)";
	document.getElementById("menu2").style.backgroundImage="url(mgar_imagens/bot1.jpg)";
	document.getElementById("menu3").style.backgroundImage="url(mgar_imagens/bot1.jpg)";
	document.getElementById("menu4").style.backgroundImage="url(mgar_imagens/bot1.jpg)";
	document.getElementById("menu5").style.backgroundImage="url(mgar_imagens/bot1.jpg)";
	document.getElementById("div"+n+"_"+idioma).style.visibility='visible';
	document.getElementById("menu"+n).style.backgroundImage="url(mgar_imagens/bot2.jpg)";
		
	}