I've hashed together this simple script to rotate pictures and link them to specified URL's, how do I make it pause when I mouseover the picture?

Question

    <a id="imageurl" name="imageurl"><img src="Rotating1" id="Rotating1" border="0" alt="Rotating1" name="Rotating1" /></a>
<script language="javascript" type="text/javascript">

   function RotateImages(Start)
  {
      var a = new Array("1.jpg","2.jpg","3.jpg", "4.jpg");
      var c = new Array("url1", "url2", "url3", "url4");
      var b = document.getElementById('Rotating1');
      var d = document.getElementById('imageurl');
      if(Start>=a.length)
          Start=0;
      b.src = a[Start];
      d.href = c[Start];
      window.setTimeout("RotateImages(" + (Start+1) + ")",3000);
  }

  RotateImages(0);

  </script>

Answer 1

The return value of setTimeout can be passed to cancelTimeout to stop the rotation. You might save it to a variable, then cancel the timeout on MouseIn and restart it on MouseOut.

Answer 2

Change your code as Follows:

<a id="imageurl" name="imageurl"><img src="Rotating1" id="Rotating1" border="0" alt="Rotating1" name="Rotating1" onmouseover="StopRotation();" onmouseout="RotateImages();"/></a>
<script language="javascript" type="text/javascript">

  var currentImage = -1;
  function RotateImages()
  {
    var a = new Array("1.jpg","2.jpg","3.jpg", "4.jpg");
    var c = new Array("url1", "url2", "url3", "url4");
    var b = document.getElementById('Rotating1');
    var d = document.getElementById('imageurl');

    currentImage++;

    if(currentImage>= a.length)
      currentImage=0;

    b.src = a[currentImage];
    d.href = c[currentImage];

    rotator = window.setTimeout("RotateImages(" + (currentImage+1) + ")",3000);
  }

  function StopRotation()
  {
    window.clearTimeout(rotator);
  }

  RotateImages();

</script>

• added Function "StopRotation"
• added onmouseover and onmouseout-Events to the Image Tag
• Rotation continues at the current Image.