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);