Untitled

<html>
<head>
<title></title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.min.js"></script>
<script type="text/javascript">
	var trigger = false;
	$("#pama").click(function(){
  	  trigger = 1 - trigger;
  	  if (trigger) {
  	      $(this).text("Два");
  	  } else {
   	     $(this).text("Раз");
   	 }
   	 return false;
	});
</script>
</head>

<body>

<a href="#" id="pama">Раз</a>

</body>
</html>