class blog_arch extends WP_Widget{
    // Initialization
    function blog_arch() {
        $widget_ops = array('classname' => 'widget_archive', 'description' => __( 'A monthly archive of your site’s posts') );
        parent::WP_Widget('archives', __('Archives'), $widget_ops);
    }

    function widget( $args, $instance ) {
        extract($args);
        $c = ! empty( $instance['count'] ) ? '1' : '0';
        $d = ! empty( $instance['dropdown'] ) ? '1' : '0';
        $title = apply_filters('widget_title', empty($instance['title']) ? __('Archives') : $instance['title'], $instance, $this->id_base);

        echo $before_widget;
        if ( $title )
            echo $before_title . $title . $after_title;

        if ( $d ) {
?>
        <select name="archive-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'> <option value=""><?php echo esc_attr(__('Select Month')); ?></option> <?php wp_get_archives(apply_filters('widget_archives_dropdown_args', array('type' => 'monthly', 'format' => 'option', 'show_post_count' => $c))); ?> </select>
<?php
        } else {
?>
        <ul class="archives">
        <?php wp_get_archives(apply_filters('widget_archives_args', array('type' => 'monthly', 'show_post_count' => $c))); ?>
        </ul>
<?php
        }

        echo $after_widget;
    }

    function update( $new_instance, $old_instance ) {
        $instance = $old_instance;
        $new_instance = wp_parse_args( (array) $new_instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
        $instance['title'] = strip_tags($new_instance['title']);
        $instance['count'] = $new_instance['count'] ? 1 : 0;
        $instance['dropdown'] = $new_instance['dropdown'] ? 1 : 0;

        return $instance;
    }

    function form( $instance ) {
        $instance = wp_parse_args( (array) $instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
        $title = strip_tags($instance['title']);
        $count = $instance['count'] ? 'checked="checked"' : '';
        $dropdown = $instance['dropdown'] ? 'checked="checked"' : '';
?>
        <p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
        <p>
            <input class="checkbox" type="checkbox" <?php echo $dropdown; ?> id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>" /> <label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e('Display as dropdown'); ?></label>
            <br/>
            <input class="checkbox" type="checkbox" <?php echo $count; ?> id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" /> <label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Show post counts'); ?></label>
        </p>
<?php
    }
}
add_action('widgets_init', create_function('', 'return register_widget("blog_arch");'));