Javascript:

<SCRIPT LANGUAGE="JavaScript">
<!--

var dimages=new Array();
var numImages=2;

for (i=0; i<numImages; i++)
{
  dimages[i]=new Image();
  dimages[i].src="images/image"+(i+1)+".jpg";
}
var curImage=-1;

function swapPicture()
{
  if (document.images)
  {
    var nextImage=curImage+1;
    if (nextImage>=numImages)
      nextImage=0;
    if (dimages[nextImage] && dimages[nextImage].complete)
    {
      var target=0;
      if (document.images.myImage)
        target=document.images.myImage;
      if (document.all && document.getElementById("myImage"))
        target=document.getElementById("myImage");

      // make sure target is valid.  It might not be valid
      //   if the page has not finished loading
      if (target)
      {
        target.src=dimages[nextImage].src;
        curImage=nextImage;
      }

      setTimeout("swapPicture()", 5000);

    }
    else
    {
      setTimeout("swapPicture()", 500);
    }
  }
}

setTimeout("swapPicture()", 5000);

//-->
</SCRIPT>

Then here is the code to place it:

<IMG WIDTH=250 HEIGHT=250 ID="myImage" NAME="myImage"
  SRC="images/image0.gif"></IMG>

HTML5
CSS3
DOM
Canvas
WebGL
SVG
Native Client
WebSockets
Node.js
Javascript

Here is a link to the article

I think this is awesome and I believe having an understanding of basic computer logic is a great skill to have. This is why I push software like Gamemaker, Squeak, Scratch, etc. which require one to understand basic programming logic.I also teach HTML, CSS, Javascript, PHP, and Actionscript in my classes.

However, I do think people are jumping the gun a bit with Javascript. The reason why? Javascript by itself is rather useless. I would not tell someone to learn javascript unless they had a solid foundation in HTML and CSS first. You really cant do anything with javascript without HTML. Learning javascript without HTML/CSS is like learning to hold your breath, then being put into a deep swimming pool without knowing how to swim.

So while I believe learning Javascript is great and I think everyone should learn basic programming…at least the logic, I believe that you should understand HTML and CSS before jumping the gun and learning Javascript.

So for those who want to learn js, just take a few weeks and learn HTML and CSS first. They are both very easy to learn – the easiest languages. Then when you have that foundation learn javascript. Then when you understand js, start learning a database language like PHP or Ruby.