user_already_annoyed

<script>
   var user_already_annoyed = false;
   window.onbeforeunload = function() {
        if ( !user_already_annoyed ){
	  lpTag.vars.push([{ scope:"page", name:"tryclose", value:"true" }]);
	  lpTag.vars.send();
          user_already_annoyed = true;
          return "Please don't leave just yet. Click 'stay on this page' for a nice discount!";		
        }
    }
</script>