Why does this code delete the LAST record, need help…

Heya,
So I can’t figure out why this code deletes the last record in the database instead of the one the user selects, can someone help?

<?php

// GLOBALS
// GLOBALS
$table_name = $wpdb->prefix . "tpc_slideshow"; // THIS VARIABLE IS USE TO CREATE A TABLE IN THE DATABASE CALLED WP_TPC_SLIDESHOW

$plugin_path = WP_PLUGIN_URL . '/' . str_replace(basename( __FILE__),"",plugin_basename(__FILE__));

// CREATE NEW SLIDESHOW
// CREATE NEW SLIDESHOW
$create_new_slideshow_button = $_POST['create-a-new-slideshow'];
$delete_this_slideshow_button = $_POST['delete-this-slideshow'];
$update_this_slideshow_button = $_POST['update-this-slideshow'];

$id = $_POST['id'];
$title = $_POST['title'];
$category = $_POST['category'];
$max_slides_to_display = $_POST['max-slides-to-display'];
$theme = $_POST['theme'];

if (isset($create_new_slideshow_button)) {

	global $title;
	global $category;
	global $max_slides_to_display;
	global $theme;

	$wpdb->insert( $table_name, array( 'title' => $title, 'category' => $category, 'max_slides_to_display' => $max_slides_to_display, 'theme' => $theme) );

	$successfully_added_message = '<div class="updated"><p>' . $title . ' has been added.</p></div>';

} elseif (isset($update_this_slideshow_button)) {

	global $id;
	global $title;
	global $category;
	global $max_slides_to_display;

	$wpdb->update( $table_name, array( 'title' => $title, 'category' => $category, 'max_slides_to_display' => $max_slides_to_display), array( 'id' => $id ) );

	$successfully_updated_message = '<div class="updated"><p>' . $title . ' has been updated.</p></div>';

} elseif (isset($delete_this_slideshow_button)) {

	global $title;
	global $id;

	$wpdb->query("DELETE FROM $table_name WHERE id = $id");

	$successfully_deleted_message = '<div class="updated"><p>' . $title . ' has been deleted.</p></div>';
}

$get_categories = mysql_query("SELECT * FROM  <code>wp_terms</code> LIMIT 0 , 30") or die(mysql_error());
$get_slideshows = mysql_query("SELECT * FROM  <code>wp_tpc_slideshow</code>") or die(mysql_error());

function tpc_slideshow_create_database() {
	global $wpdb;
	global $tpc_slideshow_version;
	$table_name = $wpdb->prefix . "tpc_slideshow"; // THIS VARIABLE IS USE TO CREATE A TABLE IN THE DATABASE CALLED WP_TPC_SLIDESHOW

	if($wpdb->get_var("SHOW TABLES LIKE '$table_name'") != $table_name) {

		$sql = "CREATE TABLE " . $table_name . " (
			id mediumint(3) NOT NULL AUTO_INCREMENT,
			title VARCHAR(200) NOT NULL,
			category VARCHAR(200) NOT NULL,
			theme VARCHAR(200) NOT NULL,
			max_slides_to_display mediumint(3) NOT NULL,
			UNIQUE KEY id (id)
		);";

		require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
		dbDelta($sql);

		add_option("tpc_slideshow_version", $tpc_slideshow_version);

   }
}

register_activation_hook(__FILE__,'tpc_slideshow_create_database'); // THIS TELLS WORDPRESS TO EXECUTE THIS FUNCTION UPON THE USER ACTIVATING THE PLUGIN.

// CHECK TO SEE WHAT VERSION OF THIS PLUGIN IS CURRENTLY INSTALLED.
$installed_version = get_option( "tpc_slideshow_version" );

// IF THE INSTALLED VERSION IS NOT THE SAME AS THE VERSION NOTED IN THIS CODE THAN UPDATE THE DATABASE
if( $installed_version != $tpc_slideshow_version ) {

	$sql = "CREATE TABLE " . $table_name . " (
		id mediumint(3) NOT NULL AUTO_INCREMENT,
		title VARCHAR(200) NOT NULL,
		category VARCHAR(200) NOT NULL,
		theme VARCHAR(200) NOT NULL,
		max_slides_to_display mediumint(3) NOT NULL,
		UNIQUE KEY id (id)
	);";

	require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
	dbDelta($sql);

	update_option( "tpc_slideshow_version", $tpc_slideshow_version );
}

// CREATE AN ADMINISTRATION PAGE BENEATH THE "SETTINGS" PANEL IN WORDPRESS
// CREATE AN ADMINISTRATION PAGE BENEATH THE "SETTINGS" PANEL IN WORDPRESS
function tpc_slideshow_add_options_page() {

	add_options_page('TPC Slideshow Options', 'TPC Slideshow', 'manage_options', 'tpc-slideshow', 'tpc_slideshow_admin_page');

	wp_enqueue_style('style', '/wp-content/plugins/tpc-slideshow/themes/back-end.css', '', '1.0', 'screen');

}

add_action('admin_menu', 'tpc_slideshow_add_options_page'); // USES THE tpc_slideshow_add_options FUNCTION TO ADD THE ADMINISTRATION PAGE

// THIS IS THE CODE THAT IS DISPLAYED ON THE ADMIN PAGE
// THIS IS THE CODE THAT IS DISPLAYED ON THE ADMIN PAGE
function tpc_slideshow_admin_page() {

	global $successfully_added_message;
	global $successfully_deleted_message;
	global $successfully_updated_message;
	global $get_categories;
	global $get_slideshows;
	global $title;

	echo '
		<div class="wrap tpc-slideshow">

			' . $successfully_deleted_message . $successfully_added_message . $successfully_updated_message . '		

			<h2>The Portland Company Slideshow</h2>
			<p>This plugin allows back end users to create multiple slideshows that display posts from multiple categories that front end users can cycle through via a previous and next button or by selecting the position indicator icon.</p>

			<br />

			<form action="" method="post">
				<p><i>Slides are ordered by the date they were created, if you would like to change their order you must visit the "Posts" section of WordPress and edit the date there.</i></p>
			<br />

			<h3>Create a New Slideshow</h3>
			<table class="widefat">
				<thead>
				<tr>
					<th style="width: 200px;">Enter a title for your slideshow:</th>
					<th>Select a category to display articles from:</th>
					<th>What is the maximum number of slides you want displayed?</th>
					<th>What theme would you like this slideshow to use?</th>
					<th></th>
				</tr>
				</thead>

				<input type="hidden" name="id" value="' . $row['id'] . '" />

				<tbody class="plugins">
					<tr>
						<td><input type="text" name="title" value="" /></td>
						<td>
							<select name="category">
	';

								while ($row = mysql_fetch_array( $get_categories )){
									echo '<option value="' . $row['name'] . '">' . $row['name'] . '</option>';
								}

	echo '
							</select>
						</td>
						<td><input type="text" name="max-slides-to-display" value="" maxlength="3" /></td>
						<td>
							<select name="theme">
								<option></option>
	';
								if ($handle = opendir('../wp-content/plugins/tpc-slideshow/themes/')) {

									while (false !== ($file = readdir($handle))) {
										if ( $file != '.' && $file != '..' && $file != 'index.html' && $file != '.DS_Store' ) {
											echo '<option value="' . $file . '">' . str_replace('-', ' ', ucwords($file)) . '</p>';
										}
									}

									closedir($handle);
								}

	echo '
							</select>
						</td>
						<td style="text-align: right"><button name="create-a-new-slideshow" class="button-primary">Create</button></td>
					</tr>
				</table>
			</form>

			<form name="edit-delete" action="" method="post">

			<br />

			<h3>Edit an Existing Slideshow</h3>

			<table class="widefat">
				<thead>
				<tr>
					<th style="width: 200px;">Title</th>
					<th>Category</th>
					<th>Max Slides to Display</th>
					<th>Shortcode</th>
					<th>Theme</th>
					<th></th>
					<th></th>
				</tr>
				</thead>
	';

	echo "<h1>ID: " . $_POST['id'] . "</h1>";

				while ($show_slideshows = mysql_fetch_array( $get_slideshows )){
					echo '
						<tr>
							<td>
								<input type="text" name="id" value="' . $show_slideshows['id'] . '" />
								<p><input type="text" name="title" value="' . $show_slideshows['title'] . '" /></p>
							</td>
							<td>
							<select name="category">
								<option value="' . $show_slideshows['category'] . '">' . $show_slideshows['category'] . '</option>
							</select>
							</td>
							<td><p>' . $show_slideshows['max_slides_to_display'] . '</p></td>
							<td><p class="code">[tpc_slideshow title="' . $show_slideshows['title'] . '"]</p></td>
							<td>
							<select name="theme">
								<option>' . str_replace('-', ' ', ucwords($show_slideshows['theme'])) . '</option>
	';
								if ($handle = opendir('../wp-content/plugins/tpc-slideshow/themes/')) {

									while (false !== ($file = readdir($handle))) {
										if ( $file != '.' && $file != '..' && $file != 'index.html' && $file != '.DS_Store' && $file != $row['theme'] ) {
											echo '<option value="' . $file . '">' . str_replace('-', ' ', ucwords($file)) . '</p>';
										}
									}

									closedir($handle);
								}

	echo '
							</select>
							</td>
							<td style="text-align: right"><button title="update-this-slideshow" class="button-primary">Update</button></td>
							<td style="text-align: right"><button name="delete-this-slideshow" class="button-secondary">Delete</button></td>
						</tr>
					';
				}

	echo '
				</tbody>
			</table>
			</form>

			<br />
			<br />
			<br />
			<br />

			<div id="sm_rebuild" class="postbox">
				<h3 class="hndle"><span>Shortcode</span></h3>
				<div class="inside">
					<p>To display a slideshow on a particular page, copy the following "shortcode" and paste it into the page you want it to display on:</p>
					<p class="code">[tpc_slideshow title="<i><b>name-of-your-slideshow</b></i>"]</p>
				</div>
			</div>

			<br />

			<h3>Developer Notes</h3>

			<div id="sm_rebuild" class="postbox">
				<h3 class="hndle"><span>PHP Code</span></h3>
				<div class="inside">
					<p>If you are a developer you may use the following PHP code:</p>
					<p class="code"><?php tpc_notifier_code("<i><b>title-of-your-slideshow</b></i>"); ?></p>
				</div>
			</div>

			<div id="sm_rebuild" class="postbox">
				<h3 class="hndle"><span>Styling and Themeing</span></h3>
				<div class="inside">
					<p>If you want to change the default style of the slideshow by adding or creating your own, you may deposit it into the <span class="code">wp-content/plugins/tpc-slideshow/themes</span> directory. You must also change the URL to the stylesheet in <span class="code">wp-content/plugins/tpc-slideshow/tpc-slideshow.php</span> within the <span class="code">tpc_slideshow_externals()</span> PHP function.</p>
					<p>If you choose to create a custom theme it must be valid by ensuring these steps are taken:</p>
					<p>1. The theme must be placed in the themes directory using all lowercase, no special characters, dashes instead of spaces or underscores (Ex. example-theme).</p>
					<p>The stylesheet must be in the root of the directory and names "styles.css".</p>
				</div>
			</div>

			<div id="sm_rebuild" class="postbox">
				<h3 class="hndle"><span>Roadmap</span></h3>
				<div class="inside">
					<p>For those who are fans of this plugin here is a <i>"roadmap"</i> of our plans to enhance this plugin:</p>
					<p>1. Implement a theme manager allows back end users to upload new themes or navigate an activate existing themes.</p>
					<p>2. Implement the ability to add multiple slideshows.</p>

					<br />

					<p>Have an idea or feature request? <a href="mailto:[email protected]">Tell us!</a></p>
				</div>
			</div>

		</div>
	';

}

// THIS CODE IS TO BE INCLUDED IN THE HEAD OF THE TEMPLATE
// THIS CODE IS TO BE INCLUDED IN THE HEAD OF THE TEMPLATE
function tpc_slideshow_externals() {

	global $get_themes;

	// GET THE PLUGIN DIRECTORY
	global $plugin_path;

	echo '
		<link rel="stylesheet" type="text/css" href="' . $plugin_path . 'themes/default/styles.css">

		<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
		<script type="text/javascript" src="' . $plugin_path . 'scripts/slideshow.js"></script>
	';
}

add_action('wp_head', 'tpc_slideshow_externals'); // THIS ADDS THE CODE WITHIN THE tpc_slideshow_externals FUNCTION INTO THE HEAD OF THE WEBSITES THEME.

// THIS CODE IS TO BE INCLUDED WHEREVER THE SHORTCODE OR PHP IS PLACED.
// THIS CODE IS TO BE INCLUDED WHEREVER THE SHORTCODE OR PHP IS PLACED.
function tpc_slideshow_front_end($title) {

	extract(shortcode_atts(array(
		'title' => $title,
	), $title));

	global $table_name;

	$result = mysql_query("SELECT * FROM $table_name WHERE title = '$title'");

	while($row = mysql_fetch_array($result)) { $category = $row['category']; }

	// IF THE TITLE IN THE SHORT CODE OR FUNCTION DOESNT EXIST IN THE DATBASE THEN DONT
	if (mysql_num_rows(mysql_query("SELECT * FROM $table_name WHERE title = '$title'"))) {

	echo '
		<div id="pageContainer">
			<div id="slideshow">
				<div id="slidesContainer">
	';

		query_posts('category_name=' . $category);

		while (have_posts()) : the_post();

			echo '<div class="slide">';
				the_content();
			echo '</div>';

		endwhile;

	echo '
				</div>
			</div>
		</div>
	';

	}

}

add_shortcode('tpc_slideshow', 'tpc_slideshow_front_end'); // GENERATES THE SHORTCODE [tpc_slideshow]