var ic = 4;
var barrasup = new Array(ic);
        
barrasup[0] = "imagens/athos/barra_sup/01_novo.jpg";
barrasup[1] = "imagens/athos/barra_sup/02_novo.jpg";
barrasup[2] = "imagens/athos/barra_sup/03_novo.jpg";
barrasup[3] = "imagens/athos/barra_sup/04_novo.jpg";

function pickRandom(range) {
	if (Math.random)
		return Math.round(Math.random() * (range-1));
	else {
		var now = new Date();
		return (now.getTime() / 1000) % range;
	}
}

var choice = pickRandom(ic);

function writeBarra(){
	document.writeln('<img src=' + barrasup[choice] + ' width=615 height=53 border=0>');
}