/* From http://www.yaldex.com/ */
// texts:
// Your messages wich may contain regular html tags but
// must at least contain: [ <font color='{COLOR}'> ]
// Use single quotes [ ' ] in your html only. If you need
// a double quote in the message itself use an escape
// sign like this: [ \" ] (not including the brackets)

var bgcolor = "#ffffff"; // background color, must be valid browser hex color (not color names)
if(!fcolor) var fcolor = "#000000"; // foreground or font color
var steps = 20; // number of steps to fade
var show = 4000; // milliseconds to display message
var sleep = 35; // milliseconds to pause inbetween messages
var loop = true; // true = continue to display messages, false = stop at last message

// Do Not Edit Below This Line
var colors = new Array(steps);
getFadeColors(bgcolor,fcolor,colors);

var color = 0;
var text = 0;
var step = 1;

// fade: magic fader function
function fade() {

	// insert fader color into message
	var text_out = texts[text].replace("{COLOR}", colors[color]); // texts should be defined in user script, e.g.: var texts = new Array("<font color='{COLOR}' sized='+3' face='Arial'>howdy</font>");

	// actually write message to document
	document.getElementById("fader").innerHTML = text_out;

	// select next fader color
	color += step;

	// completely faded in?
	if (color >= colors.length-1) {
		step = -1; // traverse colors array backward to fade out

		// stop at last message if loop=false
		if (!loop && text >= texts.length-1) return; // loop should be defined in user script, e.g.: var loop=true;
	}

	// completely faded out?
	if (color == 0) {
		step = 1; // traverse colors array forward to fade in again

		// select next message
		text += 1;
		if (text == texts.length) text = 0; // loop back to first message
	}

	// subtle timing logic...
	setTimeout("fade()", (color == colors.length-2 && step == -1) ? show : ((color == 1 && step == 1) ? sleep : 50)); // sleep and show should be defined in user script, e.g.: var sleep=30; var show=500;
}
// getFadeColors: fills Colors (predefined Array)
// with color hex strings fading from ColorA to ColorB

// note: Colors.length equals the number of steps to fade
function getFadeColors(ColorA, ColorB, Colors) {
	len = Colors.length;

	// strip '#' signs if present
	if (ColorA.charAt(0)=='#') ColorA = ColorA.substring(1);
	if (ColorB.charAt(0)=='#') ColorB = ColorB.substring(1);

	// substract rgb compents from hex string
	var r = HexToInt(ColorA.substring(0,2));
	var g = HexToInt(ColorA.substring(2,4));
	var b = HexToInt(ColorA.substring(4,6));
	var r2 = HexToInt(ColorB.substring(0,2));
	var g2 = HexToInt(ColorB.substring(2,4));
	var b2 = HexToInt(ColorB.substring(4,6));

	// calculate size of step for each color component
	var rStep = Math.round((r2 - r) / len);
	var gStep = Math.round((g2 - g) / len);
	var bStep = Math.round((b2 - b) / len);

	// fill Colors array with fader colors
	for (i = 0; i < len-1; i++) {
		Colors[i] = "#" + IntToHex(r) + IntToHex(g) + IntToHex(b);
		r += rStep;
		g += gStep;
		b += bStep;
	}
	Colors[len-1] = ColorB; // make sure we finish exactly at ColorB
}

// IntToHex: converts integers between 0-255 into a two digit hex string.
function IntToHex(n) {
	var result = n.toString(16);
	if (result.length==1) result = "0"+result;
	return result;
}

// HexToInt: converts two digit hex strings into integer.
function HexToInt(hex) {
	return parseInt(hex, 16);
}