Theme option page reset button

I’m debugging my theme options and I seem to have a small issue with the reset button:

Notice: Undefined index: id in /home/sites/heteml/users47/0/0/0/000/web/work/wordpress/wp-content/themes/simplenotes/functions.php on line 198

Notice: Undefined index: id in /home/sites/heteml/users47/0/0/0/000/web/work/wordpress/wp-content/themes/simplenotes/functions.php on line 198

Notice: Undefined index: id in /home/sites/heteml/users47/0/0/0/000/web/work/wordpress/wp-content/themes/simplenotes/functions.php on line 198

Warning: Cannot modify header information - headers already sent by (output started at /home/sites/heteml/users47/0/0/0/000/web/work/wordpress/wp-content/themes/simplenotes/functions.php:198) in /home/sites/heteml/users47/0/0/0/000/web/work/wordpress/wp-content/themes/simplenotes/functions.php on line 199

I get the above errors when I try to reset the settings. I know I need to fix delete_option but I’m not sure how…
Here’s the code:

<?php
$themename = "Simplenotes";
$shortname = "simplenotes";
$options = array (
	array(	"name" => "Theme option page",
	"type" => "title"),
	array(	"type" => "open"),
"std" => __(""),

	array(	"name" => "Twitter Account",
	"desc" => "Enter your Twitter URL.",
	"id" => $shortname."_twitter",
	"type" => "text"),
	"std" => "false",

	array(	"name" => "Facebook Account",
	"desc" => "Enter your Facebook URL.",
	"id" => $shortname."_facebook",
	"type" => "text"),
	"std" => "false",

	array(	"type" => "close")
);
function mytheme_add_admin() {
    global $themename, $shortname, $options;
    if ( isset($_GET['page']) && $_GET['page'] == basename(__FILE__) ) {
        if ( isset( $_REQUEST['action'] ) && $_REQUEST['action'] == 'save' ) {
                foreach ($options as $value) {
			if( isset( $value['id'], $_REQUEST[ $value['id'] ] ) ) {
				update_option( $value['id'], $_REQUEST[ $value['id'] ] ); } }
                foreach ($options as $value) {
			if( isset( $value['id'], $_REQUEST[ $value['id'] ] ) ) {
				update_option( $value['id'], $_REQUEST[ $value['id'] ]  ); }
		else {  } }
                header("Location: themes.php?page=functions.php&saved=true");
                die;
        } else if ( isset( $_REQUEST['action'] ) && $_REQUEST['action'] == 'reset' ) {
            foreach ($options as $value) {
                 delete_option( $value['id'] ); }
            header("Location: themes.php?page=functions.php&reset=true");
            die;
        }
    }
    add_theme_page($themename." Options", "".$themename." Options", 'edit_themes', basename(__FILE__), 'mytheme_admin');
}
function mytheme_admin() {
    global $themename, $shortname, $options;
    if ( isset( $_REQUEST['action'] ) && $_REQUEST['action'] == 'saved' ) echo '<div id="message" class="updated fade"><p><strong>'.$themename.' settings saved.</strong></p></div>';
    if ( isset( $_REQUEST['action'] ) && $_REQUEST['action'] == 'reset' ) echo '<div id="message" class="updated fade"><p><strong>'.$themename.' settings reset.</strong></p></div>';
?>
<div class="wrap">
<h2><?php echo $themename; ?> settings</h2>
<form method="post">
<?php foreach ($options as $value) {
	switch ( $value['type'] ) {
		case "open":
		?>
        <table width="100%" border="0" style="background-color:#eef5fb; padding:10px;">
		<?php break;
		case "close":
		?>
        </table><br />
		<?php break;
		case "title":
		?>
		<table width="100%" border="0" style="background-color:#; padding:5px 10px;"><tr>
        	<td colspan="2"><h3 style="font-family:Georgia,'Times New Roman',Times,serif;"><?php echo $value['name']; ?></h3></td>
        </tr>
		<?php break;
		case 'text':
		?>
        <tr>
            <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
            <td width="80%"><input style="width:400px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>" type="<?php echo $value['type']; ?>" value="<?php if ( get_option( $value['id'] ) != "") { echo get_option( $value['id'] ); } else { } ?>" /></td>
        </tr>
            <tr>
                <td><small><?php echo $value['desc']; ?></small></td>
           </tr><tr><td colspan="2" style="margin-bottom:5px;border-bottom:1px solid #c0c0c0;">&nbsp;</td></tr><tr><td colspan="2">&nbsp;</td></tr>
        <?php 		break;
}
}
?>
<!--</table>-->
<p class="submit">
<input name="save" type="submit" value="Save changes" />
<input type="hidden" name="action" value="save" />
</p>
</form>
<form method="post">
<p class="submit">
<input name="reset" type="submit" value="Reset" />
<input type="hidden" name="action" value="reset" />
</p>
</form>
<?php
}
add_action('admin_menu', 'mytheme_add_admin');
?>