<script language="JavaScript"> 
<!-- Hide the script from old browsers -- 

function MakeArray(n){ 
this.length=n; 
for(var i=1; i<=n; i++) this[i ]=i-1; 
return this 
} 

hex=new MakeArray(16); 
hex[11]="A"; hex[12]="B"; hex[13]="C"; hex[14]="D"; hex[15]="E"; hex[16]="F"; 

function ToHex(x){ 
var high=x/16; 
var s=high+""; 
s=s.substring(0,2); 
high=parseInt(s,10); 
var left=hex[high+1]; 
var low=x-high*16; 
s=low+""; 
s=s.substring(0,2); 
low=parseInt(s,10); 
var right=hex[low+1]; 
var string=left+""+right; 
return string; 
} 

function rainbow(text){ 
text=text.substring(3,text.length-4); 
color_d1=255; 
mul=color_d1/text.length; 
for(i=0;i < text.length;i++){ 
color_d1=255*Math.sin(i/(text.length/3)); "255*Math.sin(i/(text.length/3))" 
color_h1=ToHex(color_d1); 
color_d2=mul*i; 
color_h2=ToHex(color_d2); 
document.write("<FONT COLOR='#FF"+color_h1+color_h2+"'>"+text.substring(i,i+1)+'</FONT>'); 
} 
} 

// --End Hiding Here --> 
</script> 

<SCRIPT> 
<!-- 
{rainbow("--> YOUR MESSAGE GOES HERE. THE LONG THE BETTER!<!--");} 
//--> 
</SCRIPT>