function showNews() {

    var browser=navigator.appName;
    var b_version=navigator.appVersion;
    var version=parseFloat(b_version);
    
    if (!(browser=="Microsoft Internet Explorer") && (version>=4))
    {
        document.getElementById('mba-events-heading').style.backgroundImage = 'url("/mba/dress/mba-events-dark.png")';
        document.getElementById('mba-news-heading').style.backgroundImage = 'url("/mba/dress/mba-news-light.png")'; 
    }

}
function showEvents() {

    var browser=navigator.appName;
    var b_version=navigator.appVersion;
    var version=parseFloat(b_version);

    if (!(browser=="Microsoft Internet Explorer") && (version>=4))
    {
        document.getElementById('mba-events-heading').style.backgroundImage = 'url("/mba/dress/mba-events-light.png")';
        document.getElementById('mba-news-heading').style.backgroundImage = 'url("/mba/dress/mba-news-dark.png")'; 
    }

}