var browser = "unknown"; 
var version = 0; 
if (navigator.userAgent.indexOf("Opera") >= 0) 
browser = "opera"; 
else if (navigator.userAgent.indexOf("obot") >= 0) 
browser = "robot"; 
else if (navigator.appName.indexOf("etscape") >= 0) 
browser = "netscape"; 
else if (navigator.appName.indexOf("icrosoft") >= 0) 
browser = "msie"; 
version = parseFloat(navigator.appVersion); 
if (isNaN(version)) version = 0; 
if ((browser == "msie")&&(version == 2)) version = 3; 
var tohex = new Array(256); 
var hex = "0123456789ABCDEF"; 
var count = 0; 
for (x=0; x<16; x++) { 
for (y=0; y<16; y++) { 
tohex[count] = hex.charAt(x) + hex.charAt(y); 
count++; 
} 
} 
//ColorCode constructor 
function ColorCode(hexcode) { 
if (hexcode.length == 7) { 
this.r = parseInt(hexcode.substring(1,3),16); 
this.g = parseInt(hexcode.substring(3,5),16); 
this.b = parseInt(hexcode.substring(5,7),16); 
} 
else if (hexcode.length == 6) { 
this.r = parseInt(hexcode.substring(0,2),16); 
this.g = parseInt(hexcode.substring(2,4),16); 
this.b = parseInt(hexcode.substring(4,6),16); 
} 
else { 
this.r = this.g = this.b = 0; 
alert("Error: ColorCode constructor failed"); 
} 
if (isNaN(this.r)||isNaN(this.g)||isNaN(this.b)) 
alert("Error : " + hexcode + " is not a hexcode."); 
} 
// ColorList constructor 
function ColorList(hexcodes) { 
var i = 0; 
var c = 0; 
this.codes = new Array(Math.round(hexcodes.length/7)); 
while (i < hexcodes.length) { 
if (isNaN(parseInt(hexcodes.substring(i,i+6),16))) ++i; 
else { 
this.codes[c] = new ColorCode(hexcodes.substring(i,i+6)); 
i += 7; 
++c; 
} 
} 
this.len = c; 
} 
function interpolate (x1, y1, x3, y3, x2) { 
if (x3 == x1) return y1 
else return (x2-x1)*(y3-y1)/(x3-x1) + y1 
} 
// x=index of letter, y=number of letters, z=number of colors 
function lowcolorindex (x, y, z) { 
if (y == 1) return 0 
else return Math.floor( (x*(z-1))/(y-1) ) 
} 
function hicolorindex (x, y, z, low) { 
if ( low*(y-1) == x*(z-1) ) return low 
else if (y == 1) return 0 
else return Math.floor( (x*(z-1))/(y-1) + 1 ) 
} 
function gradient (thetext,thecolors) { 
if (((browser == "netscape")||(browser == "msie")||(browser == "opera"))&&(version>=3.0)) { 
var colors = new ColorList(thecolors); 
var numcolors = colors.len; 
var numchars = thetext.length; 
var rr = 0; 
var gg = 0; 
var bb = 0; 
var lci = 0; //lower color index 
var hci = 0; //high color index 
for (i=0; i<numchars; ++i) { 
lci = lowcolorindex(i, numchars, numcolors); 
hci = hicolorindex(i, numchars, numcolors, lci); 
rr = Math.round(interpolate( lci/(numcolors-1), colors.codes[lci].r, hci/(numcolors-1), colors.codes[hci].r, i/(numchars-1))); 
gg = Math.round(interpolate( lci/(numcolors-1), colors.codes[lci].g, hci/(numcolors-1), colors.codes[hci].g, i/(numchars-1))); 
bb = Math.round(interpolate( lci/(numcolors-1), colors.codes[lci].b, hci/(numcolors-1), colors.codes[hci].b, i/(numchars-1))); 
if (browser == "opera") { 
rr = 255 - rr; 
gg = 255 - gg; 
bb = 255 - bb; 
} 
document.write(thetext.charAt(i).fontcolor(tohex[rr]+tohex[gg]+tohex[bb])); 
} 
} 
else document.write(thetext); // unrecognized browser, better not to attempt anything fancy 
}