scrolling title thing

THIS CODE ISN'T MINE I JUST DON'T KNOW WHERE IT CAME FROM AND PEOPLE KEPT ASKING ME FOR IT --> CREDIT TO THE CREATOR
REPLACE TITLE HERE WITH YOUR TITLE

<!--------------- TYPING/MOVING TITLE ----------------------->

<script type="text/javascript">
var rev = "fwd";
function titlebar(val)
{
var msg = "TITLE HERE";
var res = " ";
var speed = 100;
var pos = val;
msg = "TITLE HERE";
var le = msg.length;
if(rev == "fwd"){
if(pos < le){
pos = pos+1;
scroll = msg.substr(0,pos);
document.title = scroll;
timer = window.setTimeout("titlebar("+pos+")",speed);}
else{
rev = "bwd";
timer = window.setTimeout("titlebar("+pos+")",speed);}}
else{
if(pos > 0){
pos = pos-1;
var ale = le-pos;
scrol = msg.substr(ale,le);
document.title = scrol;
timer = window.setTimeout("titlebar("+pos+")",speed);}
else{
rev = "fwd";
timer = window.setTimeout("titlebar("+pos+")",speed);
}}}
titlebar(0);
</script>