The messaging feature of Where's Tim was not working in FireFox and Safari.
I changed my javascript code from:
var msg = document.getElementById(”txtMessage”).getAttribute(”value”);
var frm = document.getElementById(”txtFrom”).getAttribute(”value”);
To:
var msg = document.getElementById(”txtMessage”).value;
var frm = document.getElementById(”txtFrom”).value;
That seemed to be the fix for Firefox. I admire you web developers, this is much less intuitive than fat client development :)