function DisplaySponsors() {
document.getElementById('sponsordiv').style.display = 'block';
document.getElementById('sponsorlink').innerHTML = '<a href="#" onclick="javascript:HideSponsors()">close sponsors</a>';
}
function HideSponsors() {
document.getElementById('sponsordiv').style.display = 'none';
document.getElementById('sponsorlink').innerHTML = '<a href="#" onclick="javascript:DisplaySponsors()">more sponsors</a>';
}