Events Manager: A Vista Gadget

// JScript File
// Called by Init (Document.js)
// Start a timer to check for upcoming events
function NotificationTimer()
{
    var searchText = document.getElementById("SearchTextBox").value;
    if(searchText == "" || searchText == null) LoadEvents();
    else Search(searchText);
    setTimeout(NotificationTimer, RefreshInterval * 60 * 1000);
}
// Called by AddLineToEventsList (EventManager.js)
function CheckEvent(eventId)
{
    var result = true;
    var radical = "Event" + eventId;
    var now = new Date();
    var eventDate = System.Gadget.Settings.read(radical + "EventDate");
    var notifyBefore = System.Gadget.Settings.read(radical + "NotifyBefore");
    
    var eventDateInMs = getDateFromFormat(eventDate, "M/d/yyyy H:m");
    var difference = eventDateInMs - now.getTime();
    
    // the event is too old, and should be deleted
    if(DeleteOldEvents==true && difference < -(OldEventDeletionDelay * 24 * 60 * 60 * 1000))
    {
        RemoveEvent(eventId);
        result = false;
    }
    // the event is old
    else if(difference <= 0)
    {
        System.Gadget.Settings.write(radical + "State", "Old");
    }
    // the event is coming soon (notify user/send email)
    else if(difference < (notifyBefore * 60 * 60 * 1000))
    {
        if(System.Gadget.Settings.read(radical + "SendEmail") == true &&
            System.Gadget.Settings.read(radical + "EmailSent") == false)
        {
            if(SendMail(eventId))
            {
                System.Gadget.Settings.write(radical + "EmailSent", true);
            }
        }
        System.Gadget.Settings.write(radical + "State", "Hot");
    }
    else
    {
        System.Gadget.Settings.write(radical + "State", "Cold");
    }
    return result;
}
function SendMail(eventId)
{
    var radical = "Event" + eventId;
    var result = true;
    // create an XmlHttpRequest obj
    var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    // ServerSideScript : script used to send mail
    // method : POST
    // async : false
    xmlHttp.Open("POST",System.Gadget.Settings.read("ServerSideScript"),false);
    xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    // Email data
    var email = System.Gadget.Settings.read("YourEmail");
    var name = System.Gadget.Settings.read(radical + "Name");
    var description = System.Gadget.Settings.read(radical + "Description");
    var date = System.Gadget.Settings.read(radical + "EventDate");
    var message = "You have an upcoming event : " + name + ".\nDate : " + date + "\nDescription :\n" + description + "\n\nSent by Event Manager Gadget.";
    // if user specified an email adress
    if(email != "")
    {
        // send the request
        xmlHttp.send("address="+email+"&subject=notification : "+name+"&message="+message);
        if(xmlHttp.status != 200)
        {
            // if request failed
            result = false;
        }
    }
    else
    {
        result = false;
    }
    return result;
}