var CATEGORY_URL     = "http://www.iss.nus.edu.sg/iss/course_category.jsp?artid=";
    var COURSE_URL       = "http://www.iss.nus.edu.sg/iss/course_detail.jsp?";
    var DEMO_URL         = "demo.cfm?user_id=";
    var demoCourseMap    = new Object();



    demoCourseMap["M-CITPM"] = "ecitpmdemo";

    demoCourseMap["VI-SITP"] = "esitpdemo";

    demoCourseMap["VI-ESTEEM"] = "esteemdemo";

    demoCourseMap["VI-OOPR"] = "eooprdemo";




function showBody() {
    var bodyObj    = document.getElementById("mainBody");
    var strDisplay = "<table border = '0' cellspacing = '2'>";

    for (var key in courseCategories) {
        var printCategory = false;
        var strCategory   = "<tr><td class = 'SectionTitle' colspan = '2'><a target = '_blank' href = '" + CATEGORY_URL + key
                          + "'>" + courseCategories[key].title + "</a></td></tr>";
        for (var key2 in courseCategories[key].courses) {
            if (courseCategories[key].courses[key2].online) {
                strCategory += "<tr><td><a target = '_blank' href = '" + COURSE_URL
                             + "artid=" + courseCategories[key].courses[key2].article + "&cd=" + key2
                             + "'>" + courseCategories[key].courses[key2].title
                             + "</td><td>";

                if (demoCourseMap[key2] != null) {
                    strCategory += "<a target = '_parent' href = '" + DEMO_URL + demoCourseMap[key2] + "'><img src = '../images/btn_arrow.gif' /></a>";
                }

                strCategory += "</td></tr>";

                printCategory = true;
            }
        }

        if (printCategory) {
            strDisplay += strCategory;
        }
    }

    strDisplay += "</table>";

    bodyObj.innerHTML = strDisplay;
}