function createRequest()
{
    try
    {
        request = new XMLHttpRequest();
    }
    catch(tryMS)
    {
        try
        {
            request = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch(otherMS)
        {
            try
            {
                request = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch(failed)
            {
                request = null;
            }
        }
    }
    return request;
}

function addEventHandler(obj,eventName,handler)
{
    if(document.attachEvent)
    {
        obj.attachEvent("on" + eventName,handler);
    }
    else if(document.addEventListener)
    {
        obj.addEventListener(eventName,handler,false);
    }
}

function getActivatedObject(e)
{
    var obj;
    if(!e)
    {
        obj = window.event.srcElement;
    }
    else if(e.srcElement)
    {
        obj = e.srcElement;
    }
    else
    {
        obj = e.target;
    }
    return obj;
}