Jump To Feature Error

[IchBin]

MessageIndex.template.php

Here's the code if you can figure it out. I don't know anything about javascript or how this works ATM. So good luck!

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<form action="', $scripturl, '" method="get" accept-charset="', $context['character_set'], '" name="jumptoForm">
<span class="smalltext"><label for="jumpto">' . $txt[160] . '</label>:</span>
<select name="jumpto" id="jumpto" onchange="if (this.selectedIndex > 0 &amp;&amp; this.options[this.selectedIndex].value) window.location.href = smf_scripturl + this.options[this.selectedIndex].value.substr(smf_scripturl.indexOf(\'?\') == -1 || this.options[this.selectedIndex].value.substr(0, 1) != \'?\' ? 0 : 1);">
<option value="">' . $txt[251] . ':</option>';

// Show each category - they all have an id, name, and the boards in them.
foreach ($context['jump_to'] as $category)
{
// Show the category name with a link to the category. (index.php#id)
echo '
<option value="" disabled="disabled">-----------------------------</option>
<option value="#', $category['id'], '">', $category['name'], '</option>
<option value="" disabled="disabled">-----------------------------</option>';

/* Now go through each board - they all have:
id, name, child_level (how many parents they have, basically...), and is_current. (is this the current board?) */
foreach ($category['boards'] as $board)
{
// Show some more =='s if this is a child, so as to make it look nice.
echo '
<option value="?board=', $board['id'], '.0"', $board['is_current'] ? ' selected="selected"' : '', '> ', str_repeat('==', $board['child_level']), '=> ', $board['name'], '</option>';
}
}

echo '
</select>&nbsp;
<input type="button" value="', $txt[161], '" onclick="if (this.form.jumpto.options[this.form.jumpto.selectedIndex].value) window.location.href = \'', $scripturl, '\' + this.form.jumpto.options[this.form.jumpto.selectedIndex].value;" />
</form>