// add ability to create calendar without buttons
var AdvDateTimeShortcuts = {}
AdvDateTimeShortcuts.addCalendar = function(inp, shortcut_id) {
        var num = DateTimeShortcuts.calendars.length;

        DateTimeShortcuts.calendarInputs[num] = inp;

        // Shortcut links (calendar icon and "Today" link)
        if (shortcut_id) {
        	var link = document.getElementById(shortcut_id);
        	link.setAttribute('href', 'javascript:DateTimeShortcuts.openCalendar(' + num + ');');
        	link.setAttribute('id', DateTimeShortcuts.calendarLinkName + num);
        }

        // Create calendarbox div.
        //
        // Markup looks like:
        //
        // <div id="calendarbox3" class="calendarbox module">
        //     <h2>
        //           <a href="#" class="link-previous">&lsaquo;</a>
        //           <a href="#" class="link-next">&rsaquo;</a> February 2003
        //     </h2>
        //     <div class="calendar" id="calendarin3">
        //         <!-- (cal) -->
        //     </div>
        //     <div class="calendar-shortcuts">
        //          <a href="#">Yesterday</a> | <a href="#">Today</a> | <a href="#">Tomorrow</a>
        //     </div>
        //     <p class="calendar-cancel"><a href="#">Cancel</a></p>
        // </div>
        var cal_box = document.createElement('div');
        cal_box.style.display = 'none';
        cal_box.style.position = 'absolute';
        cal_box.className = 'calendarbox module';
        cal_box.setAttribute('id', DateTimeShortcuts.calendarDivName1 + num);
        document.body.appendChild(cal_box);
        addEvent(cal_box, 'click', DateTimeShortcuts.cancelEventPropagation);

        // next-prev links
        var cal_nav = quickElement('div', cal_box, '');
        var cal_nav_prev = quickElement('a', cal_nav, '<', 'href', 'javascript:DateTimeShortcuts.drawPrev('+num+');');
        cal_nav_prev.className = 'calendarnav-previous';
        var cal_nav_next = quickElement('a', cal_nav, '>', 'href', 'javascript:DateTimeShortcuts.drawNext('+num+');');
        cal_nav_next.className = 'calendarnav-next';

        // main box
        var cal_main = quickElement('div', cal_box, '', 'id', DateTimeShortcuts.calendarDivName2 + num);
        cal_main.className = 'calendar';
        DateTimeShortcuts.calendars[num] = new Calendar(DateTimeShortcuts.calendarDivName2 + num, DateTimeShortcuts.handleCalendarCallback(num));
        DateTimeShortcuts.calendars[num].drawCurrent();

        // calendar shortcuts
        var shortcuts = quickElement('div', cal_box, '');
        shortcuts.className = 'calendar-shortcuts';
        quickElement('a', shortcuts, gettext('Yesterday'), 'href', 'javascript:DateTimeShortcuts.handleCalendarQuickLink(' + num + ', -1);');
        shortcuts.appendChild(document.createTextNode('\240|\240'));
        quickElement('a', shortcuts, gettext('Today'), 'href', 'javascript:DateTimeShortcuts.handleCalendarQuickLink(' + num + ', 0);');
        shortcuts.appendChild(document.createTextNode('\240|\240'));
        quickElement('a', shortcuts, gettext('Tomorrow'), 'href', 'javascript:DateTimeShortcuts.handleCalendarQuickLink(' + num + ', +1);');

        // cancel bar
        var cancel_p = quickElement('p', cal_box, '');
        cancel_p.className = 'calendar-cancel';
        quickElement('a', cancel_p, gettext('Cancel'), 'href', 'javascript:DateTimeShortcuts.dismissCalendar(' + num + ');');
};
DateTimeShortcuts.handleCalendarCallback = function(num) {
    return "function(y, m, d) { DateTimeShortcuts.calendarInputs["+num+"].value = d+'.'+m+'.'+y; $(DateTimeShortcuts.calendarInputs["+num+"]).trigger('change'); DateTimeShortcuts.dismissCalendar("+num+"); }";
};
DateTimeShortcuts.openCalendar_orig = DateTimeShortcuts.openCalendar;
DateTimeShortcuts.openCalendar = function(num) {
    DateTimeShortcuts.calendars[num].drawDate(DateTimeShortcuts.calendars[num].currentMonth,
        DateTimeShortcuts.calendars[num].currentYear);
    DateTimeShortcuts.openCalendar_orig(num);
};
DateTimeShortcuts.handleCalendarQuickLink = function(num, offset) {
    var d = new Date();
    d.setDate(d.getDate() + offset);
    DateTimeShortcuts.calendarInputs[num].value = [d.getDate(), d.getMonth()+1, d.getFullYear()].join('.');
    DateTimeShortcuts.dismissCalendar(num);
};