MAX  = 3;
  url  = new Array(MAX);
  img  = new Array(MAX);

	url[0]="default.asp\" target=\"_self"
	img[0]="imagens/home01.gif"
	
	url[1]="default.asp\" target=\"_self"
	img[1]="imagens/home03.gif"
	
	url[2]="default.asp\" target=\"_self"
	img[2]="imagens/home04.jpg"
	
  var now = new Date()

  var nro = (now.getSeconds() % MAX)
  document.write('<a href="'+url[nro]+'"><img src="'+img[nro]+'" border=0></a>')