JavaScript彩虹流光字

<p style="background:#666; font-weight:bold; padding:10px; font-size:30px; font-family:Georgia; text-align:center;">
<script type="text/javascript">
farbbibliothek = new Array();
farbbibliothek[0] = new Array("#FF0000","#FF1100","#FF2200","#FF3300","#FF4400","#FF5500","#FF6600","#FF7700","#FF8800","#FF9900","#FFaa00","#FFbb00","#FFcc00","#FFdd00","#FFee00","#FFff00","#FFee00","#FFdd00","#FFcc00","#FFbb00","#FFaa00","#FF9900","#FF8800","#FF7700","#FF6600","#FF5500","#FF4400","#FF3300","#FF2200","#FF1100");
farbbibliothek[1] = new Array("#FF0000","#FF4000","#FF8000","#FFC000","#FFFF00","#C0FF00","#80FF00","#40FF00","#00FF00","#00FF40","#00FF80","#00FFC0","#00FFFF","#00C0FF","#0080FF","#0040FF","#0000FF","#4000FF","#8000FF","#C000FF","#FF00FF","#FF00C0","#FF0080","#FF0040");
farbbibliothek[2] = new Array("#FF0000","#EE0000","#DD0000","#CC0000","#BB0000","#AA0000","#990000","#880000","#770000","#660000","#550000","#440000","#330000","#220000","#110000","#000000","#110000","#220000","#330000","#440000","#550000","#660000","#770000","#880000","#990000","#AA0000","#BB0000","#CC0000","#DD0000","#EE0000");
farben = farbbibliothek[1];
function farbschrift()
{
    for(var i=0 ; i<Buchstabe.length; i++)
    {
        document.getElementById("a"+i).style.color=farben[i];
    }
  farbverlauf();
}
function string2array(text)
{
    Buchstabe = new Array();
    while(farben.length<text.length)
    {
      farben = farben.concat(farben);
    }
    k=0;
    while(k<=text.length)
    {
      Buchstabe[k] = text.charAt(k);
      k++;
    }
}
function divserzeugen()
{
    for(var i=0 ; i<Buchstabe.length; i++)
    {
        document.write("<span id='a"+i+"' class='a"+i+"'>"+Buchstabe[i] + "</span>");
    }
    farbschrift();
}
var a=1;
function farbverlauf()
{
    for(var i=0 ; i<farben.length; i++)
    {
      farben[i-1]=farben[i];
    }
    farben[farben.length-1]=farben[-1];
    setTimeout("farbschrift()",60);
}
var farbsatz=1;
function farbtauscher()
{
    farben = farbbibliothek[farbsatz];
    while(farben.length<text.length) 
    {
      farben = farben.concat(farben);
    }
    farbsatz=Math.floor(Math.random()*(farbbibliothek.length-0.0001));
}
setInterval("farbtauscher()",5000);
text= "Alone";
string2array(text);
divserzeugen();
//document.write(text); 
</script>
</p>