// prosys.js
// some utility functions for www.prosys.fi
// author: Tatu Paronen

var bannerNumber = 0;

function showNews(url) {
    new Ajax.Updater('scroll-content', url, {
      method: 'get',
      encoding: 'iso-8859-1'
    });
}

function changeBgImage(image, obj) {
    var element = obj;
    element.style.backgroundImage = "url("+image+")";
}

function getNextBanner() {
    var banner;
    if (!(bannerNumber < banners.length))
        bannerNumber = 0;
    banner = banners[bannerNumber];
    bannerNumber = bannerNumber + 1;
    return banner;
}

function showBanner() {
    var bannerDiv = document.getElementById('banner');
    var bannerImage = getNextBanner();
        $('#banner').fadeOut('slow', function() {
            bannerDiv.innerHTML = bannerImage;
            $('#banner').fadeIn('slow', function() {
                if (!(banners.length == 1))
                    setTimeout("showBanner();", 4000);
            })
        });

}

$(document).ready(function() {
    //evenOutDivs();
    $('#banner').hide(); // show banner
    showBanner();
});