Solo modifica donde dice titulo :
<Script>
var titletext="Titulo"
var thetext=""
var started=false
var step=0
var times=1
function welcometext()
{
times--
if (times==0)
{
if (started==false)
{
started = true;
document.title = titletext;
setTimeout("anim()",1);
}
thetext = titletext;
}
}

function showstatustext(txt)
{
thetext = txt;
setTimeout("welcometext()",4000)
times++
}

function anim()
{
step++
if (step==7) {step=1}
if (step==1) {document.title='>==='+thetext+'===<'}
if (step==2) {document.title='=>=='+thetext+'==<='}
if (step==3) {document.title='==>='+thetext+'=<=='}
if (step==4) {document.title='=>=>'+thetext+'<=<='}
if (step==5) {document.title='==>='+thetext+'=<=='}
if (step==6) {document.title='===>'+thetext+'<==='}
setTimeout("anim()",200);
}

if (document.title)
window.onload=onload=welcometext
</script>

Fuente :

http://www.paginawebgratis.es/forum/viewtopic.php?t=10620