Come settare un Java script?

[luglio1975]

Ho inserito questo java script nel html:

<h1>
<script language="JavaScript">
var message=" Entra e scopri il mondo dei Tartufi. "
var neonbasecolor="gray"
var neontextcolor="#cbac57"
var flashspeed=100  //in milliseconds

///No need to edit below this line/////

var n=0
if (document.all){
document.write('<font color="'+neonbasecolor+'">')
for (m=0;m<message.length;m++)
document.write('<span id="neonlight">'+message.charAt(m)+'</span>')
document.write('</font>')

//cache reference to neonlight array
var tempref=document.all.neonlight
}
else
document.write(message)

function neon(){

//Change all letters to base color
if (n==0){
for (m=0;m<message.length;m++)
tempref[m].style.color=neonbasecolor
}

//cycle through and change individual letters to neon color
tempref[n].style.color=neontextcolor

if (n<tempref.length-1)
n++
else{
n=0
clearInterval(flashing)
setTimeout("beginneon()",1500)
return
}
}

function beginneon(){
if (document.all)
flashing=setInterval("neon()",flashspeed)
}
beginneon()
// -->
</script>
</h1>

come posso farlo girare con i css e farlo validare?