function btnCssRollover(id) {document.getElementById(id).style.backgroundPosition = '0px -63px'}
function btnCssRollout(id) {document.getElementById(id).style.backgroundPosition = '0px 0px'}

function btnLogoCssRollover(id) {document.getElementById(id).style.backgroundPosition = '0px -135px'}
function btnLogoCssRollout(id) {document.getElementById(id).style.backgroundPosition = '0px 0px'}

function btnEmailCssRollover(id) {document.getElementById(id).style.backgroundPosition = '0px -51px'}
function btnEmailCssRollout(id) {document.getElementById(id).style.backgroundPosition = '0px 0px'}