function right(e) {
var msg = "If you wish to use our logo please contact us directly.";
if (navigator.appName == 'Netscape' && e.which == 3) {
alert(msg);
return false;
}
if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) {
alert(msg);
return false;
}
else return true;
}

document.getElementById('siteLogo').onmousedown = right;
document.getElementById('siteLogo').onmouseup = right;