文字变色

<script type="text/javascript">
 var message = "闽派企业中国服装品牌年度大奖兵败反思";
 var n = 0;
 if (document.all) {
     document.write('<font size="15px" color="#0000ff">');
     for (m = 0; m < message.length; m++) {
         document.write('<span id="neonlight" style="font-family:Verdana,Arial;font-size:15px">' + message.charAt(m) + '</span>');
     }
     document.write('</font>');
     var tempref = document.all.neonlight;
 } else {
     document.write(message);
 }

 function neon() {
     if (n == 0) {
         for (m = 0; m < message.length; m++) {
             tempref[m].style.color = "#ff0099"
         }
     }
     tempref[n].style.color = "#9900CC";
     if (n < tempref.length - 1) {
         n++;
     } else {
         n = 0;
         clearInterval(flashing);
         setTimeout("beginneon()", 1500);
         return;
     }
 }

 function beginneon() {
     if (document.all) {
         flashing = setInterval("neon()", 100);
     }
 }
 beginneon();
</script>