var months = [ "JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC" ];

function InsertCalendar(when) {
    var date = new Date(when);
    var monthname = months[date.getMonth()];
    var day = date.getDate();
    document.write("<table width='60' height='64' class='cal_table'>");
    document.write("<tr><td class='monthname'>");
    document.write(monthname);
    document.write("</td></tr><tr><td class='datevalue'>");
    document.write(day);
    document.write("</td></tr></table>");
}