var currentdate = 0;
var core = 0;

function initArray() {

this.length = initArray.arguments.length;
  for (var i = 0; i < this.length; i++) {
  this[i] = initArray.arguments[i];
  }
}

link = new initArray(
"http://www.diariodapunheta.com",
"http://www.diariodosexo.org"
);


image = new initArray(
"http://www4.pic-upload.de/26.03.10/xc9ivt7puknv.jpg",
"http://www2.pic-upload.de/30.05.10/quh73qif3m8d.jpg"
);


text = new initArray(
"",
""
);

var currentdate = new Date();
var core = currentdate.getSeconds() % image.length;
var ranlink  = link[core];
var ranimage = image[core];
var rantext  = text[core];

document.write('<a href=\"' +ranlink+ '\" target="_blank"><img src=\"'+ranimage+'\" border="0" alt=\"'+rantext+'\"></a>');