etech0

    tripFilter = function () {
          var tripClass = '.hotel-trip select',
            hotelClass  = '.hotel-name select',
            cityClass = '.city-date select',
            unusedClass = '.unused-options select';

          var tripSelect = jQuery(cityClass), //used to be tripClass
             trip = tripSelect.val(), //figure out which trip they're going on
             hotelSelect = tripSelect.parents('form').find(hotelClass); //set the var for the dropdown box for Hotel Room Option