var b_timer = null; // blink timer 

var b_on = true; // blink state 

var blnkrs = null; // array of spans 



function blink() { 

  var tmp = document.getElementsByTagName("span"); 

  if (tmp) 
  { 

    blnkrs = new Array(); 

    var b_count = 0; 

    for (var i = 0; i < tmp.length; ++i) 
    {
      if (tmp[i].className == "blink") 
      { 

        blnkrs[b_count] = tmp[i]; 

        ++b_count; 

      } 

    } 

    // time in m.secs between blinks 

    // 500 = 1/2 second 

    blinkTimer(600); 

  } 

} 



function blinkTimer(ival) 
{ 

  if (b_timer) 
  { 

    window.clearTimeout(b_timer); 

    b_timer = null; 

  } 

  blinkIt(); 

  b_timer = window.setTimeout('blinkTimer(' + ival + ')', ival); 

} 



function blinkIt() 
{
  for (var i = 0; i < blnkrs.length; ++i) 
  { 

    if (b_on == true) 
    { 

      blnkrs[i].style.visibility = "hidden"; 

    } 

    else 
    { 

      blnkrs[i].style.visibility = "visible"; 

    } 

  } 

  b_on =!b_on; 

}