function onload() {
    var links = document.getElementById('nav').getElementsByTagName('a');
    for (var i = 0; i < links.length; i++) {
        links[i].onmousedown = function() {
            this.blur();
            return false;
        }
        links[i].onclick = function() {
            this.blur();
        }
        if (/msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent)) {
            links[i].onfocus = function() {
                this.blur();
            }
        }
    }
}