Switching a picture according to a pull down selection

Wetpants

Hello!
I have really searched, and while learning alot didn't find a solution to just my problem, which I don't think should be so difficult but I've been stuck many, many moons now... :queasy:

I am trying to modify some code and working with a pulldown select menu which I then want to change a picture according to what has been selected.

The pull down function is:

function tep_draw_pull_down_menu($name, $values, $default = '', $parameters = '', $required = false) {
$field = '<select name="' . tep_output_string($name) . '"';

if (tep_not_null($parameters)) $field .= ' ' . $parameters;

$field .= '>';

if (empty($default) && isset($GLOBALS[$name])) $default = stripslashes($GLOBALS[$name]);

for ($i=0, $n=sizeof($values); $i<$n; $i++) {
  $field .= '<option value="' . tep_output_string($values[$i]['id']) . '"';
  if ($default == $values[$i]['id']) {
    $field .= ' SELECTED';
  }

  $field .= '>' . tep_output_string($values[$i]['text'], array('"' => '&quot;', '\'' => ''', '<' => '&lt;', '>' => '&gt;')) . '</option>';
}
$field .= '</select>';

if ($required == true) $field .= TEXT_FIELD_REQUIRED;

return $field;

}[/SIZE][/COLOR]

And is then created with:

<?php echo tep_draw_pull_down_menu('id[' . $products_options_name['products_options_id'] . ']', $products_options_array, $selected_attribute); ?>

I don't know where or how I can grab what is selected from the menu (ie.'blue'), and then make the picture changed (to blue).

Thanks for reading so far, any help is appreciated, even just a tip in the right direction thank you!

redrage

where are you storing the information on the change? You will have to put the picture settings in a file or database somewhere.

Unless you are using javascript but the change will discapear next time someone loads it.

that is unless i'm tottally missing something.

Wetpants

Thanks for your reply. I am definitely sure I am the one missing something :rolleyes:

Actually I hadn't even gotten so far as to the picture, I was hoping to first just find out how to grab the variable from the selection and do any action after that. I am using an SQL database.

But here is where the picture is created:

function tep_image($src, $alt = '', $width = '', $height = '', $parameters = '') {
if ( (empty($src) || ($src == DIR_WS_IMAGES)) && (IMAGE_REQUIRED == 'false') ) {
return false;
}

// alt is added to the img tag even if it is null to prevent browsers from outputting
// the image filename as default
$image = '<img src="' . tep_output_string($src) . '" border="0" alt="' . tep_output_string($alt) . '"';

if (tep_not_null($alt)) {
  $image .= ' title=" ' . tep_output_string($alt) . ' "';
}

if ( (CONFIG_CALCULATE_IMAGE_SIZE == 'true') && (empty($width) || empty($height)) ) {
  if ($image_size = @getimagesize($src)) {
    if (empty($width) && tep_not_null($height)) {
      $ratio = $height / $image_size[1];
      $width = $image_size[0] * $ratio;
    } elseif (tep_not_null($width) && empty($height)) {
      $ratio = $width / $image_size[0];
      $height = $image_size[1] * $ratio;
    } elseif (empty($width) && empty($height)) {
      $width = $image_size[0];
      $height = $image_size[1];
    }
  } elseif (IMAGE_REQUIRED == 'false') {
    return false;
  }
}

if (tep_not_null($width) && tep_not_null($height)) {
  $image .= ' width="' . tep_output_string($width) . '" height="' . tep_output_string($height) . '"';
}

if (tep_not_null($parameters)) $image .= ' ' . $parameters;

$image .= '>';

return $image;

}[/SIZE][/COLOR]
And here is where it's called:

<?php
if (tep_not_null($product_info['products_image'])) {
?>
<table border="0" cellspacing="0" cellpadding="2" align="right">
<tr>
<td align="center" class="smallText">
<script language="javascript"></script>
<noscript>
<?php echo '<a href="' . tep_href_link(DIR_WS_IMAGES . $product_info['products_image']) . '" target="_blank">' . tep_image(DIR_WS_IMAGES . $product_info['products_image'], $product_info['products_name'], SMALL_IMAGE_WIDTH, SMALL_IMAGE_HEIGHT, 'hspace="5" vspace="5"') . '<br>' . TEXT_CLICK_TO_ENLARGE . '</a>'; ?>
</noscript>
</td>
</tr>
</table>
<?php
}
?>

Wetpants

Can I just throw in a $_POST somewhere? But where? And then use it without a 'submit' button?