$(document).ready(function(){

    var userId = $("#userId").val();
    var typeId = $("#typeId").val();
    var city 	 = $("#City").val();

		$("#plantName").autocomplete("ajax/get_autocomplete_plant_names.php", {"extraParams": {
						"userId": userId, 
						"goalId": function() { return $("#goalId").val()}, 
						"typeId": typeId, 
						"sortId": function() { return $("#sortId").val()}, 
						"city": city}});
  });