/* ********************************************************************
* Buffered Text-fade Effect - v3.0
* - Copyright 2008 - Licenced for free distribution under the BSDL
*   - http://www.opensource.org/licenses/bsd-license.php
*
*   This program is licenced under the BSDL and may be distributed far
* and wide, anywhere on the planet and beyond (maybe!)  If you happen
* to get a kick out of this script, please drop me a note at:
* wyvern@greywyvern.com and tell me where you gave it a good home and
* plenty of bytes to eat, hmmm? :)  I'd be eternally grateful.
*
* Description:
*   A javascript object which allows you to direct text fades within an
* HTML page.  Fades received before the previous fade has completed are
* queued rather than displayed immediately.  This keeps all fade
* animations smooth.
*
* Changelog:
*  3.0  - Buffer for each fadeObject is stored separately for stability
*         and speed.
*       - Major structure changes.  Different arguments
*
* Support:
*   Opera   - Yes
*   IE 6    - Yes
*   IE 5.5  - Yes
*   IE 5.01 - Fails
*   Firefox - Yes
*   Safari  - Yes
*
***********************************************************************
* I) Setting Up
*
*   Copy the javascript from this page into an external .js file or
* into the <script> tag of your own HTML page.  You only need the code
* between the "Begin" and "End" lines.  This shouldn't be that
* difficult, but you wouldn't believe the kind of mail I get about
* this!  Just do it, okay?  Jeez.
*
*   a) The Fade Object
*   After that's done we need to create a fade object.  We do this by
* calling the fadeObj function with a number of arguments.  We'll use
* the default example included in the script: fader[0].  You can delete
* the fader[1] lines if you like.
*
* fader[0] = new fadeObj('fade0', 'dddddd', '000000', 20, 20);
*
*   The first argument ('fade0') is the id of the HTML tag which will
* be displaying the fading effect.  Usually you'll want to apply some
* height and width styles to this element, since it starts out with no
* text by default and will probably be collapsed.  You don't want it
* jumping around when the script writes new text to it.
*
*   The next two values are hexidecimal colour values, WITHOUT the
* preceding #.  The first value is the starting colour, or the colour
* the text is before it fades in.  The second value is the ending
* colour, or the colour the text will be when it finishes fading in.
*
*   The last two values are two integers which indicate the number of
* "steps" the script must take to complete a fade-in and a fade-out
* respectively.  With a value of 20 like in the example above, there
* will be 20 colour changes before the text is fully faded-in or faded-
* out.  The lower these numbers, the faster the fade will be.
*
*   b) The Fade Messages
*   After setting up our fade object, all we need to do now is write
* out all of the messages which will be displayed in this element.
* Remember that this script only affects text of a single colour.
* Images and multi-coloured text won't work.
*
*   Messages are included in the msg[] array.  Simply assign each
* message a number, like so:
*
* fader[0].msg[1] = "Fade text, message one.";
*
*   Each fade object can have as many messages as you want, and be in
* any numerical order.  You can even skip numbers, but note that if you
* use the fade() method pointed at a message number which doesn't
* exist, you will get an error.
*
* The msg[] array should start at element [1].  If you would like a
* default message to appear if there are no more fade-in events in the
* queue, assign the default message to element [0].
*
***********************************************************************
* II) The Events
*
*   Fades can be triggered by any DOM event, but most likely you'll be
* using mouseover and mouseout events.  I used those events as examples
* below.
*
*   To trigger a fade, you use the fade() method to add a fade action
* to the queue.  The reason we use a queue, is so that you can add this
* fade, even if another fade is already happening.  The fade() method
* takes two important arguments:
*
* Example: onmouseover="fader[0].fade(1, true);"
*
*   In this example we are still referencing fade object fader[0].
*
*   The first argument is the message this command refers to.  This one
* has been associated with msg[1] of fader[0].
*
*   The second argument indicates the direction of the fade.
*     -> true = fade in, false = fade out.
*
*   Examine the working example script to see how these events were
* placed on the <td> elements below.
*
***********************************************************************
* III) Tips
*
*   - All the text in each msg[] variable MUST be on one line in the
* code.  That means this:
*
*   fader[0].msg[1] = "Fader zero,
* message one";
*
* ... is not allowed!  The text should wrap automatically when it's
* displayed on your HTML page, but you can force line breaks with the
* <br> tag.  (If you have some Javascript experience you'll know how to
* get around this).
*
*   - If you're placing the fading text on a background image, make
* the starting colour an average sample of the background instead of
* just black or white.  This will enhance the "disappearing" effect.
*
*   - The script can only fade text, but can accept non-graphical HTML
* tags in which CSS text color is inherited, such as <p>, <table> (no
* borders), <strong> and <em>.  Use these tags to add structure and a
* simple text layout to your fades.
*
*   - To have links fade along with with the surrounding text, apply
* the CSS style: color:inherit !important; to all links within the fade
* text messages.
*
***********************************************************************
* That's it!  Isn't that amazing!?! :)
*
* If you have any problems with this script, don't hesitate to email me
* at wyvern@greywyvern.com and I'll be happy to answer your matter-of-
* life-and-death questions!  Cheers!
******************************************************************** */


/* ***** Begin ***************************************************** */
function fadeObject(id, c1, c2, s1, s2) {
  var self = this;
  this.id      = id;
  this.elem    = false;
  this.colour  = {
    stt: [parseInt(c1.substr(0, 2), 16), parseInt(c1.substr(2, 2), 16), parseInt(c1.substr(4, 2), 16)],
    end: [parseInt(c2.substr(0, 2), 16), parseInt(c2.substr(2, 2), 16), parseInt(c2.substr(4, 2), 16)],
    now: [parseInt(c1.substr(0, 2), 16), parseInt(c1.substr(2, 2), 16), parseInt(c1.substr(4, 2), 16)]
  };
  this.steps   = [s1, s2];
  this.dir     = false;
  this.active  = false;
  this.queue   = [];
  this.msg     = [];
  this.message = 0;
  function d2h(num) {
    num = Math.round(num);
    return ((num < 16) ? "0" : "") + num.toString(16);
  }
  this.fade = function(message, direction) {
    this.elem = this.elem || document.getElementById(this.id);
    this.queue.push([message, direction]);
    for (var x = 0; x < this.queue.length; x++) {
      for (var y = x + 1; y < this.queue.length; y++) {
        if (this.queue[x][0] == this.queue[y][0] && this.queue[x][1] != this.queue[y][1]) {
          this.queue.splice(x, 1);
          this.queue.splice(y - 1, 1);
        }
      }
    }
    if (!this.active) setTimeout(function() { self.fadeLoop(); }, 0);
  };
  this.fadeLoop = function() {
    if (!this.active && this.queue.length) {
      if (this.dir && this.message != this.queue[0][0]) this.queue.unshift([this.message, false]);
      var msg = this.queue.shift();
      if (this.msg[msg[0]]) {
        this.active = true;
        this.elem.innerHTML = this.msg[this.message = msg[0]];
        this.dir = msg[1];
      }
    }
    if (this.dir) {
      var c1 = this.colour.stt, c2 = this.colour.end, s = this.steps[0];
    } else var c1 = this.colour.end, c2 = this.colour.stt, s = this.steps[1];
    for (var x = 0, cnow = "", inc = 0; x < 3; x++) {
      this.colour.now[x] += inc = (c2[x] - c1[x]) / s;
      cnow += this.colour.now[x] = (inc < 0) ? Math.max(this.colour.now[x], c2[x]) : Math.min(this.colour.now[x], c2[x]);
    } this.elem.style.color = "#" + d2h(this.colour.now[0]) + d2h(this.colour.now[1]) + d2h(this.colour.now[2]);
    if (cnow == c2.join("")) {
      this.active = false;
      if (!this.queue.length) {
        if (!this.dir) {
          if (this.msg[0]) {
            this.queue.push([0, true]);
            setTimeout(function() { self.fadeLoop(); }, 0);
          } else this.elem.innerHTML = "&nbsp;";
        }
      } else setTimeout(function() { self.fadeLoop(); }, 0);
    } else setTimeout(function() { self.fadeLoop(); }, 0);
  };
  if (window.addEventListener) {
    window.addEventListener('load', function() { self.fade(0, true); }, false); 
  } else if (window.attachEvent)
    window.attachEvent('onload', function() { self.fade(0, true); });
}
/* ***** End ******************************************************* */




/* *****
 * User defined fade objects and messages
 *
 * These messages are used in fades triggered by mouseovers and
 * mouseouts on table cells.  They are the simplest type of fade and
 * require no extra Javascript code.
 */
var fader = new Array();

fader[0] = new fadeObject('fade0', 'dddddd', '990000', 20, 20);
fader[0].msg[0] = "This is an optional default message; the fade object on the right side has no default.  Mouseover each topic to make quotes fade in and out.";
fader[0].msg[1] = "Nowhere can a man find a quieter or more untroubled retreat than in his own soul.<br />- Marcus Aurelius";
fader[0].msg[2] = "Feeding the starving poor only increases their number.<br />- Ben Bova";
fader[0].msg[3] = "The limits of tyrants are prescribed by the endurance of those whom they oppose.<br />- Frederick Douglass";
fader[0].msg[4] = "The foolish man seeks happiness in the distance, the wise grows it under his feet.<br />- James Oppenheim";

fader[1] = new fadeObject('fade1', 'bbbbbb', '990000', 20, 20);
fader[1].msg[1] = "Success is relative. It is what we can make of the mess we have made of things.<br />- T.S. Eliot";
fader[1].msg[2] = "We have two ears and one mouth so we may listen more and talk the less.<br />- Epictetus";
fader[1].msg[3] = "It is better to be violent, if there is violence in our hearts, than to put on the cloak of nonviolence to cover impotence.<br />- Mahatma Gandhi";
fader[1].msg[4] = "Don't part with your illusions. When they are gone you may still exist, but you have ceased to live.<br />- Mark Twain";



/* *****
 * The code below describes how to make a throbbing or automatic fade
 * sequence of messages.  It is important to note that this function is
 * NOT part of the Buffered Text-Fade Effect, but merely an example of
 * how it can be used.  In this example, the throb() function controls
 * the commands which are sent to the fade engine; it is called
 * repeatedly at set time intervals rather than using mouseover events
 * as triggers.
 *
 * Notes:
 * - A global array "hash" is used to keep track of where each
 *   animation is currently in the sequence.
 * - The list of messages defined in the fader *must* start at one (1)
 *   and count upwards without skipping any integers.
 * - The third line of the throb() function controls how fast
 *   commands get sent to the fade engine.  It waits only 100 milli-
 *   seconds when fading out, but 5000 milliseconds (5 seconds) when
 *   fading in; this means the message will remain visible for about 5
 *   seconds before fading out again.
 *
 * Other types of fade animation are possible simply by designing
 * different ways to control the fade-ins and fade-outs!
 */
var hash = new Array();
function throb(item) {

  // If the hash array does not have an entry for this item, initialise it at 2
  if (!hash[item]) hash[item] = 2;

  // Send a fade command using the hash array to tell us what parameters we should use
  fader[item].fade(Math.floor(hash[item] / 2), !(hash[item] % 2));

  // Call this function again for this same item after a certain amount of time
  setTimeout(function() { throb(item); }, (hash[item] % 2) ? 100 : 18000);

  // If we have exceeded the number of messages in this fader, start over again at 2
  if (++hash[item] > fader[item].msg.length * 2 - 1) hash[item] = 2;
}

fader[2] = new fadeObject('fade2', '990000', 'ffffff', 90, 90);
fader[2].msg[1] = "It is our firm conviction that true biblical Christianity is the only philosophy in the world<br>within which one can live what he believes and believe what he lives.<br><br>- Robert Morey";
fader[2].msg[2] = "Although I greatly admire the creative brilliance of the Greek thinkers, I believe it is a serious mistake<br>to adopt their worldviews or to try to synthesize their thinking with the worldview of the Bible.<br><br>- John Frame";
fader[2].msg[3] = "By predestination we mean the eternal decree of God, by which he determined with himself whatsoever he wished to happen<br>with regard to every man. All are not credited on equal terms, but some are preordained to eternal life, others to eternal damnation;<br>and, accordingly, as each has been created for one or other of these ends, we say that he has been predestined to life or to death.<br><br>- John Calvin";
fader[2].msg[4] = "When I was Chairman of the membership committee of the ETS, I often doubted the salvation of such men as Gundry, Pinnock, etc.<br>who denied the inerrancy of Scripture. They were offended when I told them that I did NOT accept them as fellow Christians.<br><br>- Robert Morey";
fader[2].msg[5] = "Since the natural man assumes the idea of brute fact in metaphysics and the idea of the autonomy of the human mind in epistemology,<br>the Reformed apologist realizes that he should first challenge these notions.<br><br>- Cornelius Van Til";
fader[2].msg[6] ="It is therefore in vain that so many burning lamps shine for us in the workmanship of the universe to show forth the glory of its Author. Although they bathe us wholly in their radiance, yet they can of themselves in no way lead us into the right path.<br><br>- John Calvin";
fader[2].msg[7] ="Today, if a pastor is strong and outspoken in his preaching and pastoring, he will be accused of pride and beaten down with<br>accusations that he is not loving, kind or sensitive to people's feelings.<br><br>- Robert Morey";
fader[2].msg[8] ="The chief benefit in studying Greek thought is to understand better the philosophical and cultural consequences of rejecting biblical theism.<br><br>- John Frame";
fader[2].msg[9] ="The natural man virtually attributes to himself that which a true Christian theology attributes to the self-contained God.<br>The battle is therefore between the absolutely self-contained God of Christianity and the would-be wholly self-contained mind of<br>the natural man. Between them there can be no compromise.<br><br>- Cornelius Van T";
fader[2].msg[10] ="The Revelation given to us in Scripture is the only Light in a world of philosophic darkness and despair.<br><br>- Robert Morey";
fader[2].msg[11] ="If you are a real Christian, then you will submit to Scripture as the final authority on how to live and what to believe.<br><br>- Robert Morey";
fader[2].msg[12] ="In this regard how volubly has the whole tribe of philosophers shown their stupidity and silliness:<br>For even though we may excuse the others (who act like utter fools),<br>Plato, the most religious of all and the most circumspect, also vanishes in his round globe.<br><br>- John Calvin";



// Start this fader
setTimeout(function() { throb(2); }, 1000);