Open all link of webpage in few seconds interval

Open all link of webpage

(function($) {
  var links = [], time, index = 0, un = ['account', 'youtube', '#', 'javascript'], openWindow;
  function isNotUn(text) {
    for(var i = 0; i < un.length; i++) {
      var pttrn = new RegExp(un[i]);
      if(pttrn.test(text)) return false;
    }
    return true;
  }
  $('a').each(function(i, item) {
    itemLink = $(item).attr('href');
    if(itemLink && isNotUn(itemLink) && links.indexOf(itemLink) === -1) {
      links.push(itemLink);
    }
  });
  
  function open() {
    time = setTimeout(function() {
      if(undefined != openWindow) openWindow.close();
      openWindow = window.open(links[index]);
      index += 1;
      if(index+1 < links.length)
      open();
    }, 15000);
  }
  open();
})(jQuery)