var rollOverArr=new Array();
function setrollover(OverImgSrc,pageImageName)
{
if (! document.images)return;
if (pageImageName == null)
    pageImageName = document.images[document.images.length-1].name;
rollOverArr[pageImageName]=new Object;
rollOverArr[pageImageName].overImg = new Image;
rollOverArr[pageImageName].overImg.src=OverImgSrc;
}

function rollover(pageImageName)
{
if (! document.images)return;
if (! rollOverArr[pageImageName])return;
if (! rollOverArr[pageImageName].outImg)
    {
    rollOverArr[pageImageName].outImg = new Image;
    rollOverArr[pageImageName].outImg.src = document.images[pageImageName].src;
    }
document.images[pageImageName].src=rollOverArr[pageImageName].overImg.src;
}

function rollout(pageImageName)
{
if (! document.images)return;
if (! rollOverArr[pageImageName])return;
document.images[pageImageName].src=rollOverArr[pageImageName].outImg.src;
}

setrollover('images/nav/home_on.gif', 'home');
setrollover('images/nav/professionals_on.gif', 'professionals');
setrollover('images/nav/banking_on.gif', 'banking');
setrollover('images/nav/research_on.gif', 'research');
setrollover('images/nav/news_on.gif', 'news');
setrollover('images/nav/contact_on.gif', 'contact');

setrollover('conference/images/conference_btn_on_v4.jpg', 'confBtn');

setrollover('conference/images/conference_home_on.png', 'confBanner');