function RevExibir(){
	if (nRevInd > nTotRev)
		nRevInd = 0;
	else
		if (nRevInd < 0)
			nRevInd = nTotRev;

	rCapa = document.getElementById( "revCapa" );
	rLnk  = document.getElementById( "revLnk" );
			
	rCapa.src = aRevCap[nRevInd];
	rLnk.href = aRevLnk[nRevInd];
}
function RevAnterior(){
	nRevInd--;
	RevExibir();
}
function RevProxima(){
	nRevInd++
	RevExibir();
}