Scrolling title using java script

/* Save this file as abc.js */
msg = " the test site   ";  //title

msg = "" + msg;pos = 0;
function scrollMSG() {
document.title = msg.substring(pos, msg.length) + msg.substring(0, pos);
pos++;
if (pos >  msg.length) pos = 0
window.setTimeout("scrollMSG()",200);
}
scrollMSG();



/*use this on aspx page*/

 <script src="js/abc.js" type="text/javascript"></script>