function logoCentering() {

    var rbcLogo = document.getElementById("rbcSystemIdentifierLogo");

    if (rbcLogo.parentNode.className == "image") {

        var elImg = rbcLogo.firstChild;

        if (elImg && elImg.offsetHeight == 0) {
            Event.observe(window, 'load', function(e) {
                setTimeout(logoCentering, 1000);
            }

			);
            return false;
        }

        offsetTop = parseInt((60 - elImg.offsetHeight) / 2);
        if (offsetTop > 0) {
            rbcLogo.parentNode.style.overflow = "visible";
            rbcLogo.firstChild.style.position = "relative";
            rbcLogo.firstChild.style.top = offsetTop + "px";
        }
    }
}