//START OF RandomNumberFX
function getRandomNum(lbound, ubound) {
    return (Math.floor(Math.random() * (ubound - lbound)) + lbound);
}
//END OF RandomNumberFX

//START OF RainbowTextFX
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;
}

var RainbowTextFX_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 = RainbowTextFX_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 = RainbowTextFX_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 OF RainbowTextFX