function buzz_showinterest(target_id, target_type_id) {
  var div_id = target_type_id + "_" + target_id;
  spjs_hide('buzz_option_'+div_id);
  spjs_show('buzz_busy_'+div_id);

	new Ajax.Request('ajax.php',
	{
		parameters: { 
      _action: 'buzz', 
      target_id: target_id, 
      target_type_id: target_type_id
    },
		onSuccess: function(response) {
      var json_response = response.responseText.evalJSON();
      
      if(json_response.ajax_status == 1) {
        spjs_hide('buzz_busy_'+div_id);
        spjs_show('buzz_buzzed_'+div_id);
      }
      else {
        alert(json_response.error_msg);
        spjs_hide('buzz_busy_'+div_id);
        spjs_show('buzz_option_'+div_id);
      } 
		},
		onFailure: function(){
			alert('Couldn\'t show interest');
      spjs_hide('buzz_busy_'+div_id);
      spjs_show('buzz_option_'+div_id);
		}
	});
}