function setCopyDate()
{
    if (document.getElementById)
    {
        var date = new Date();
        var publishDate = 2011;
        var currentDate = date.getFullYear();
        if (publishDate == currentDate)
        {
            document.getElementById("year").innerHTML = currentDate;
        }
        else if (publishDate != currentDate)
        {
            document.getElementById("year").innerHTML = publishDate + "–" + currentDate;
        }
    }
}

function addLoadEvent(func)
{
    var oldonload = window.onload;
    if (typeof window.onload != 'function')
    {
        window.onload = func;
    }
    else
    {
        window.onload = function ()
        {
            if (oldonload)
            {
                oldonload();
            }
            func();
        }
    }
}

addLoadEvent(setCopyDate);