function changeLinkOver() {
document.getElementById("homeLink").style.backgroundImage = "url(images/menu_round_left2.gif)"
}

function changeLinkOut() {
document.getElementById("homeLink").style.backgroundImage = "url(images/menu_round_left.gif)"
}

function changeContactLinkOver() {
document.getElementById("contactUsLink").style.backgroundImage = "url(images/menu_round_right2.gif)"
}

function changeContactLinkOut() {
document.getElementById("contactUsLink").style.backgroundImage = "url(images/menu_round_right.gif)"
}