Help with linking thumbnails to full sized images

I've set up an image gallery page and would like to be able to link the thumbnails that are displayed to the larger uploaded images.

I can't seem to get this to work. Hope someone can help.

The images were uploaded with the following parameters:

Maximum uploads: 1 file
Maximum upload size: 1000 Kbytes
Resize images larger than: 800 height 600 width
Create image thumbnails: 275 height 275 width

I'm assuming that this would create a thumbnail that's no larger than 275px by 275px, and a large image that's no larger than 800px by 600px.


The following code is a sample of what is on the web page:


<?php foreach ($gallery_2003Record['image_1'] as $upload): ?>
<?php if ($upload['hasThumbnail']): ?>
<img src="<?php echo $upload['thumbUrlPath'] ?>" width="<?php echo $upload['thumbWidth'] ?>" height="<?php echo $upload['thumbHeight'] ?>" alt="" /><br/>
<?php elseif ($upload['isImage']): ?>
<img src="<?php echo $upload['urlPath'] ?>" width="<?php echo $upload['width'] ?>" height="<?php echo $upload['height'] ?>" alt="" /><br/>
<?php else: ?>
<a href="<?php echo $upload['urlPath'] ?>">Download <?php echo $upload['filename'] ?></a><br/>
<?php endif ?>
<br />
<?php echo $upload['info1']; ?><br />
<?php echo $upload['info2']; ?><br />
<br />
</span>