$30 bounty for fixing minor JS bug in jquery_autocomplete module

Each time this issue surfaces, I keep offering an alternative (non-JavaScript) solution: http://right-here-tavern.info/drave-robber/micromodules-need-no-nid

Limitations: in case of duplicate titles, always picks the first.

If this serves your case to the level of "almost, but", I'm ready to look into bringing it to complete perfection. :)

Did you have any other changes you had made to the code besides the one above? That single change seemed to work for me as I was debugging through this code. I came up with the same solution as you did.

NVM: Found the issue you're describing. I had user autocomplete on the form as the second field, not another nodereference. Looking at it now.

just add check if "form-autocomplete" exist on this page

Drupal.behaviors.jqueryAutocomplete = function (context) {
  if ($('.form-autocomplete').length >0 ) {}
	  $('.form-autocomplete').each(function() {
		  var ac = $(this);
		  ac.data('changed', false);
		  ac.data('alias', 'ac-real-');
		  ac.data('rx',  /\s*\[nid:\d+\]\s*/i);
		  ac.data('name', ac.attr('name'));
		  ac.data('id', ac.attr('id'));
		  ac.data('value', ac.val());
		  ac.before('<input name="'+ac.data('alias')+ac.data('name')+'" type="hidden" id="'+ac.data('alias')+ac.data('id')+'" value="'+ac.data('value')+'" />');
		  ac.data('real', '#'+ac.data('alias')+ac.data('id'));
		  });
	  $('.form-autocomplete').blur(function() {
		  var ac = $(this);
		  var real = $(ac.data('real'));
		  if ($.browser.msie && !ac.data('changed')) {
		  ac.change();
		  }
		  if (ac.val().match(ac.data('rx'))) {
		  real.val(ac.val());
		  }
		  ac.val(ac.val().replace(ac.data('rx'), ''));
		  ac.attr('name', ac.data('alias')+ac.data('name'));
		  real.attr('name', ac.data('name'));
		  ac.data('changed', false);
		  });
	  $('.form-autocomplete').change(function() {
		  var ac = $(this);
		  if ($.browser.msie) {
		  ac.data('changed', true);
		  }
		  ac.blur();
		  });
	  if ($.browser.safari || $.browser.mozilla) {
		jsACOriginal = Drupal.jsAC.prototype.hidePopup;
		Drupal.jsAC.prototype.hidePopup = function (keycode) {
		  jsACOriginal.call(this, keycode);
		  var ac = $('input.form-autocomplete[type="text"]');
		  var real = $(ac.data('real'));
		  if (ac.val().match(ac.data('rx'))) {
			real.val(ac.val());
		  }
		  ac.val(ac.val().replace(ac.data('rx'), ''));
		  ac.attr('name', ac.data('alias')+ac.data('name'));
		  real.attr('name', ac.data('name'));
		};
	  }
	  $('.form-autocomplete').focus(function() {
		  var ac = $(this);
		  var real = $(ac.data('real'));
		  ac.attr('name', ac.data('name'));
		  real.attr('name', ac.data('alias')+ac.data('name'));
		  });
	  $('.form-autocomplete').each(function() {
		  var ac = $(this);
		  ac.blur();
		  });
	}
};