var currentLinkId = 'intranetLink';

function toggle(id) {
var element = document.getElementById(id);
with (element.style) {
if ( display == "none" ) {
display = ""
} else {
display = "none"
}
}
}

function switchTo(form, newLinkId) {
if ( newLinkId == currentLinkId ) {
return;
}
toggle(currentLinkId);
toggle(newLinkId);
currentLinkId = newLinkId;
}