
<!-- Original:  Quak Zhixuan (zhixuan@email.com) -->
<!-- Web Site:  http://www.chs.edu.sg/~991b20 -->

<!-- Modifications:  Jim Cairo (jcairo@mediaone.net) -->
<!-- Result:  Improves color selection, better results -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<!-- Begin
function createHexArray(n) {
this.length = n;
for (var i = 1; i <= n; i++)
	this[i] = i - 1;

	this[11] = "A";
	this[12] = "B";
	this[13] = "C";
	this[14] = "D";
	this[15] = "E";
	this[16] = "F";
	return this;
}

hx = new createHexArray(16);

function convertToHex(x) {
	if (x < 17) x = 16;
	var high = x / 16;
	var s = high+"";
	s = s.substring(0, 2);
	high = parseInt(s, 10);
	var left = hx[high + 1];
	var low = x - high * 16;
	if (low < 1) low = 1;
	s = low + "";
	s = s.substring(0, 2);
	low = parseInt(s, 10);
	var right = hx[low + 1];
	var string = left + "" + right;
	return string;
}

function makeRainbow(text) {
	text = text.substring(0, text.length);
	color_d1 = 255;
	mul = color_d1 / text.length;
	for(var i = 0; i < text.length; i++) {
		color_d1 = 255*Math.sin(i / (text.length / 3));
		color_h1 = convertToHex(color_d1);
		color_d2 = mul * i;
		color_h2 = convertToHex(color_d2);

		k = text.length;
		j = k - i;
		if (j < 0) j = 0;
		color_d3 = mul * j;
		color_h3 = convertToHex(color_d3);

		document.write("<FONT COLOR=\"#" + color_h3 + color_h1 + color_h2 + "\">" + text.substring(i, i + 1) + "</FONT>");
	}
}
// End -->


