function pulseOn(id) {
  $(id).fadeTo(2000, 1, function() {
    setTimeout("pulseOff('" + id + "')", 300);
  });
}

function pulseOff(id) {
  $(id).fadeTo(2000, 0, function() {
    setTimeout("pulseOn('" + id + "')", 300);
  });
}

$(document).ready(function() {
  pulseOn('#phase02pulse');
  pulseOn('#phase03pulse');

  $("#phase02pulse").hover(function(){
    $(this).fadeIn(400,1);
  },
  function(){
    $(this).fadeIn(400,0);
  });

  $("#phase03pulse").hover(function(){
    $(this).fadeIn(400,1);
  },
  function(){
    $(this).fadeIn(400,0);
  });

});