Change year drop down list in IE 8

I am having an issue with the change year list. When I select a year in the list and then try and click on the list again to select another year, the list pops up that quickly goes away. After the list goes away if I am able to select the list the next time, but every time I make a selection the next time i try and click the list it bugs again.

#!div style="font-size: 80%"
Code highlighting:
  {{{#!js
var dates = $("#txtStartDate, #txtEndDate").datepicker({
                changeYear: true,
                changeMonth: true,
                onSelect: function (selectedDate) {
                    var option = this.id == "txtStartDate" ? "minDate" : "maxDate",
				        instance = $(this).data("datepicker");
                    date = $.datepicker.parseDate(
				        instance.settings.dateFormat ||
				        $.datepicker._defaults.dateFormat,
					    selectedDate, instance.settings);
                    dates.not(this).datepicker("option", option, date);
                }
            });
  

}}}