Show user name on top bar

You need custom scripts enabled.

var doc=top.noodle.headWindow().document;
var el=doc.getElementById("status");
el.style.display="none";
el=doc.getElementById("currentUserId");
el.style.display="none";
el=doc.getElementById("currentUser");
el.style.margin="20px";
el=doc.getElementById("currentUserName").parentNode;
el.style.display="block";