var results = new Object();

function showPrice() {
    /* var asxCodeNode = document.getElementById("asxCode"); */
    var yearNode = document.getElementById("year");
    var monthNode = document.getElementById("month");
    var dayNode = document.getElementById("day");

    /* The following line dates back to when asxCode was a dropdown. */
    /* var asxCode = asxCodeNode.options[asxCodeNode.selectedIndex].text; */
    var year = yearNode.options[yearNode.selectedIndex].text;
    var month = monthNode.options[monthNode.selectedIndex].text;
    var day = dayNode.options[dayNode.selectedIndex].text;

    /* var code = asxCode + year + month + day; */
    var code = year + month + day;
    var price;

    if (results[code] == null) {
        price = "Unknown.";
        alert("Suncorp-Metway did not trade on " + day + "/" + month + "/" + year + ".")
    } else {
        price = results[code];
        alert("On " + day + "/" + month + "/" + year + " the closing price was " + price);
    }
}