Hola, el script es este:
<SCRIPT LANGUAGE="JavaScript">
<!--
var msg="::::::::::: AQUI VA EL TEXTO DE LA MARQUESINA::::::::::::::::::::::::::::"
var delay=60
var startPos=100
var timerID=null
var timerRunning=false
var pos=0
StartScrolling()
function StartScrolling(){
StopTheClock()
for (var i = 0; i < startPos; i++)
msg=" " + msg
DoTheScroll()
}
function StopTheClock(){
if(timerRunning)
clearTimeout(timerID)
timerRunning=false
}
function DoTheScroll(){
if (pos < msg.length)
self.status=
msg.substring(pos, msg.length);
else
pos=-1;
++pos
timerRunning=true
timerID=
self.setTimeout("DoTheScroll()", delay)
}
</script>
Saludos