//Load images
var img = new Image();
img.src = "/ruff_images/ruff_background.png";
img = new Image();
img.src = "/images/short_overbar_on.gif";
img = new Image();
img.src = "/images/short_overbar_off.gif";
img = new Image();
img.src = "/images/long_overbar_on.gif";
img = new Image();
img.src = "/images/long_overbar_off.gif";
img = new Image();
img.src = "/images/med_overbar_off.gif";
img = new Image();
img.src = "/images/med_overbar_on.gif";

var currOver;
var sp = 0;
var u = 0;
var d = 0;

function getPage(page, v)
{
    currOver = 'over' + page;
    toggleOverBarOff('overhome', 'short');
    toggleOverBarOff('overnews', 'short');
    toggleOverBarOff('overproducts', 'long');
    toggleOverBarOff('overmedia', 'short');
    toggleOverBarOff('overcontact', 'short');
    toggleOverBarOff('overlinks', 'short');

    elem = document.getElementById('downlink1');
    elem.style.visibility = v;

    elem = document.getElementById('downlink2');
    elem.style.visibility = v;

    elem = document.getElementById('topright');
    elem.style.visibility = v;

    //hideAllPages();
    //elem = document.getElementById(page);
    //elem.style.visibility = 'visible';
}

function hideAllPages()
{
    //document.getElementById('news').style.visibility = 'hidden';
    document.getElementById('products').style.visibility = 'hidden';
    //document.getElementById('media').style.visibility = 'hidden';
    document.getElementById('contact').style.visibility = 'hidden';
}

function toggleOverBarOn(page, size)
{
    var imgel = page + 'img';
    var img = '/images/' + size + '_overbar_on.gif';
    document.getElementById(imgel).src = img;
}
function toggleOverBarOff(page, size)
{
    if(currOver == page)
    {
        return;
    }
    var imgel = page + 'img';
    var img = '/images/' + size + '_overbar_off.gif';
    document.getElementById(imgel).src = img;
}
function doScrollDown(element) {
        var elem = document.getElementById(element);
        var maxp=elem.offsetHeight?elem.offsetHeight:elem.style.pixelHeight;
        if(sp < -(maxp - 400)) {
                return;
        }
        sp = sp - 5;
        elem.style.top=sp;
}

function doScrollUp(element) {
        var elem = document.getElementById(element);
        var maxp=elem.offsetHeight?elem.offsetHeight:elem.style.pixelHeight;
        if(sp == 0) {
                return;
        }
        sp = sp + 5;
        elem.style.top=sp;
}