Java Script Daily Slide Show Changer: script

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Here's one way to do it. Assuming your images are named according to the date you want them shown, (i.e., the image for july 26th is named 7-26.gif) you could do it like this:

<html>
<head>
      <script type="text/javascript">

      function setImage() {
            var today = new Date();
            var filename = (today.getMonth() + 1) + "-" + today.getDate() + ".gif";
            document.images["daily"].src = filename;
      }

      </script>


</head>

<body bgcolor="#ffffff" onload="setImage()">

<table border="0" cellpadding="0" cellspacing="0">
      <tr>
            <td>
                  <img src="" name="daily">
            </td>
      </tr>
</table>

</body>
</html>

If your images aren't named by date, you could create an array of all the filenames and choose one according to the day of the year. This approach is not as elegant in my opinion, but it works fine:

<html>
<head>

<script type="text/javascript">

      var images = new Array(
            "image1.jpg",
            "image2.jpg",
            "bob.jpg",
            "steve.jpg",
            "susan.jpg",
            // ... etc ...
            "picture365.jpg"
      )

      function setImage() {

            var today = new Date();
            var day = dayOfYear( today );

            if( images.length >= day ) {
                  var filename = images[ day - 1 ];
                  document.images["daily"].src = filename;
            } else {
                  // use the last image in the array if the array doesn't have enough entries
                  document.images["daily"].src = images[images.length - 1];
            }

      }

      function dayOfYear( theDate ) {

             with (theDate) {
                  var t = valueOf();
                  setMonth(0);
                  setDate(0);
                  var dayNum = Math.round((t - valueOf()) / 86400000);
                  return dayNum;
            }


      }

</script>


</head>

<body bgcolor="#ffffff" onload="setImage()">

<table border="0" cellpadding="0" cellspacing="0">
      <tr>
            <td>
                  <img src="" name="daily">
            </td>
      </tr>
</table>

</body>
</html>

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Java Script Daily Slide Show Changer

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Web Graphics Software

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