function search_manufacturer_change() {
        var manufacturer_value = $("#id_search_manufacturer").val();
        var process_value = $("#id_search_process").val();
        var type_value = $("#id_search_type").val();
        var wafer_value = $("#id_search_wafer").val();
        $.ajax({
            type: "GET",
            url: "SearchData.php",
            cache: false,
            data: "criteria=process&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value,
            success: function(msg) {
                $("#span_search_process").empty();
                $("#span_search_process").append(msg);
                $.ajax({
                    type: "GET",
                    url: "SearchData.php",
                    cache: false,
                    data: "criteria=type&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value,
                    success: function(msg) {
                        $("#span_search_type").empty();
                        $("#span_search_type").append(msg);
                        $.ajax({
                            type: "GET",
                            url: "SearchData.php",
                            cache: false,
                            data: "criteria=wafer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value,
                            success: function(msg) {
                                $("#span_search_wafer").empty();
                                $("#span_search_wafer").append(msg);
                            }
                        });
                    }
                });
            }
        });
    }

function search_process_change() {
        var manufacturer_value = $("#id_search_manufacturer").val();
        var process_value = $("#id_search_process").val();
        var type_value = $("#id_search_type").val();
        var wafer_value = $("#id_search_wafer").val();
        $("#span_search_manufacturer").load("SearchData.php?criteria=manufacturer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_type").load("SearchData.php?criteria=type&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_wafer").load("SearchData.php?criteria=wafer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
    }

function search_type_change() {
        var manufacturer_value = $("#id_search_manufacturer").val();
        var process_value = $("#id_search_process").val();
        var type_value = $("#id_search_type").val();
        var wafer_value = $("#id_search_wafer").val();
        $("#span_search_manufacturer").load("SearchData.php?criteria=manufacturer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_process").load("SearchData.php?criteria=process&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_wafer").load("SearchData.php?criteria=wafer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
    }
function search_wafer_change() {
        var manufacturer_value = $("#id_search_manufacturer").val();
        var process_value = $("#id_search_process").val();
        var type_value = $("#id_search_type").val();
        var wafer_value = $("#id_search_wafer").val();
        $("#span_search_manufacturer").load("SearchData.php?criteria=manufacturer&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_process").load("SearchData.php?criteria=process&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
        $("#span_search_type").load("SearchData.php?criteria=type&manufacturer=" + manufacturer_value + "&process=" + process_value + "&wafer=" + wafer_value + "&type=" + type_value);
    }