MAX  = 1;
  url  = new Array(MAX);
  img  = new Array(MAX);

	url[0]="http://afiliados.submarino.com.br/books.asp?Query=&ProdTypeId=1&CatId=11712&PrevCatId=11709&franq=139463\" target=\"_blank"
	img[0]="http://www.grito.com.br/banners/half_submarino.gif"

  var now = new Date()

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