$(document).ready(function(){
        $('#exam1').change(function(){
      var exam = $("#exam1 option:selected").text();
      if (exam == 'WAEC') {
        $('#exam_type1 option').remove();
        $("#exam_type1").append($("<option></option>").val("May/June WASCE").html("May/June WASCE"));
        $("#exam_type1").append($("<option></option>").val("Nov/Dec WASCE").html("Nov/Dec WASCE"));
        
        $('#exam_year1 option').remove();
        for (var i=1991; i<=2023; i++) {
          $("#exam_year1").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NECO') {
        $('#exam_type1 option').remove();
        $("#exam_type1").append($("<option></option>").val("June/July").html("June/July"));
        $("#exam_type1").append($("<option></option>").val("Nov/Dec").html("Nov/Dec"));
        $("#exam_type1").append($("<option></option>").val("JSCE").html("JSCE"));
        $("#exam_type1").append($("<option></option>").val("NCEE").html("NCEE"));
        
        $('#exam_year1 option').remove();
        for (var i=2000; i<=2024; i++) {
          $("#exam_year1").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NABTEB') {
        $('#exam_type1 option').remove();
        $("#exam_type1").append($("<option></option>").val("May/June").html("May/June"));
        $("#exam_type1").append($("<option></option>").val("Nov/Dec").html("Nov/Dec"));
        $("#exam_type1").append($("<option></option>").val("Modular (March)").html("Modular (March)"));
        $("#exam_type1").append($("<option></option>").val("Modular (December)").html("Modular (December)"));
        
        $('#exam_year1 option').remove(); 
        for (var i=2000; i<=2024; i++) {
          $("#exam_year1").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NBAIS') {
        $('#exam_type1 option').remove();
        $("#exam_type1").append($("<option></option>").val("June/July").html("June/July"));
        
        $('#exam_year1 option').remove();
        for (var i=2000; i<=2024; i++) {
          $("#exam_year1").append($("<option></option>").val(i).html(i));
        }
      }
    });
    
    $('#exam2').change(function(){
      var exam = $("#exam2 option:selected").text();
      if (exam == 'WAEC') {
        $('#exam_type2 option').remove();
        $("#exam_type2").append($("<option></option>").val("May/June WASCE").html("May/June WASCE"));
        $("#exam_type2").append($("<option></option>").val("Nov/Dec WASCE").html("Nov/Dec WASCE"));
        
        $('#exam_year2 option').remove();
        for (var i=1991; i<=2023; i++) {
          $("#exam_year2").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NECO') {
        $('#exam_type2 option').remove();
        $("#exam_type2").append($("<option></option>").val("June/July").html("June/July"));
        $("#exam_type2").append($("<option></option>").val("Nov/Dec").html("Nov/Dec"));
        $("#exam_type2").append($("<option></option>").val("JSCE").html("JSCE"));
        $("#exam_type2").append($("<option></option>").val("NCEE").html("NCEE"));
        
        $('#exam_year2 option').remove();
        for (var i=2000; i<=2024; i++) {
          $("#exam_year2").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NABTEB') {
        $('#exam_type2 option').remove();
        $("#exam_type2").append($("<option></option>").val("May/June").html("May/June"));
        $("#exam_type2").append($("<option></option>").val("Nov/Dec").html("Nov/Dec"));
        $("#exam_type2").append($("<option></option>").val("Modular (March)").html("Modular (March)"));
        $("#exam_type2").append($("<option></option>").val("Modular (December)").html("Modular (December)"));
        
        $('#exam_year2 option').remove();
        for (var i=2000; i<=2024; i++) {
          $("#exam_year2").append($("<option></option>").val(i).html(i));
        }
      }
      else if (exam == 'NBAIS') {
        $('#exam_type2 option').remove();
        $("#exam_type2").append($("<option></option>").val("June/July").html("June/July"));
        
        $('#exam_year2 option').remove();
        for (var i=2000; i<=2024; i++) {
          $("#exam_year2").append($("<option></option>").val(i).html(i));
        }
      }
    });
    if ($("#sittings").val() == 1)
    {
      $(".sitting2").hide();
    }
    else{
      $(".sitting2").removeClass('hide');
    }
    
    $("#sittings").change(function(){
      var sitting = $("#sittings").val();
      if (sitting == 1) {
        $(".sitting2").fadeOut("slow");
      }
      else if (sitting == 2) {
        $(".sitting2").fadeIn("slow");
      }
    });
    });