go_visibility = new Array;
function goblink()
{
  if(document.getElementById && document.all)
  {
    blink_tab = document.getElementsByTagName('blink');
    for(a=0;a<blink_tab.length;a++)
    {
      if(go_visibility[a] != "visible")
      go_visibility[a] = "visible";
      else
      go_visibility[a] = "hidden";
      blink_tab[a].style.visibility=go_visibility[a];
    }
  }
  setTimeout("goblink()", 3000);
} 
window.onload = goblink;