my widget

<?php
/*
Plugin Name: ***
Plugin URI: ***
Description: ****
Version: 0.1
Author: *****
Author ***
*/

class Sample_Widget extends WP_Widget
{
    function Sample_Widget()
    {
        $widget_ops = array('classname' => 'ODw_Blocks', 'description' => 'ONE.DAY.web blocks.');
        $control_ops = array('width' => 600, 'height' => 800);
        $this->WP_Widget('ODw_Blocks', 'O.D.w Tekst Blokke', $widget_ops, $control_ops);

        // Load Jquery & redactor!
        $redactorCSS = plugins_url('/odw-sections/css/redactor.css');
        $redactorJS = plugins_url('/odw-sections/js/redactor.min.js');
        $redactorInit = plugins_url('/odw-sections/js/init.js');
        wp_enqueue_style('redactorcss', $redactorCSS);
        wp_enqueue_script('redactorjs', $redactorJS);
        wp_enqueue_script('redactorInit', $redactorInit);
    }

    function update($new_instance, $old_instance)
    {
        $instance = $old_instance;
        $instance['box1'] = $new_instance['box1'];
        $instance['box2'] = $new_instance['box2'];
        $instance['box3'] = $new_instance['box3'];
        $instance['box4'] = $new_instance['box4'];

        if ( current_user_can('unfiltered_html') )
        $instance['text'] =  $new_instance['box1'];
        else
        $instance['box1'] = stripslashes( wp_filter_post_kses( addslashes($new_instance['box1']) ) ); // wp_filter_post_kses() expects slashed

        if($instance['boxqty'] > 4)
        {
            $instance['boxqty'] = 4;
        }
        else if($instance['boxqty'] < 1)
        {
            $instance['boxqty'] = 1;
        }
        else {
            $instance['boxqty'] = $new_instance['boxqty'];
        }

        return $instance;
    }

    function form($instance)
    {
        $instance = wp_parse_args((array) $instance, array( 'box1' => '', 'box2' => '', 'box3' => '', 'box4' => '' ));
        $box1 = $instance['box1'];
        $box2 = $instance['box2'];
        $box3 = $instance['box3'];
        $box4 = $instance['box4'];
        $boxqty = $instance['boxqty'];


        $uniqueID = rand();
        echo "Unique ID: ".$uniqueID;

        ?>
        <p>
            <label for="<?php echo $this->get_field_id('boxqty'); ?>">Number of blocks: (1-4)
                <input class="widefat" id="<?php echo $this->get_field_id('boxqty'); ?>" name="<?php echo $this->get_field_name('boxqty'); ?>" type="text" value="<?php echo attribute_escape($boxqty); ?>" />
            </label>
        </p>
        <p>
            <label for="<?php echo $this->get_field_id('box1'); ?>">Box 1:
                <textarea class="widefat redactor_content" id="box1" name="<?php echo $this->get_field_name('box1'); ?>" style="width: 600px;"><?php echo $box1; ?></textarea>
            </label>
        </p>
        <p>
            <label for="<?php echo $this->get_field_id('box2'); ?>">Box 2:
                <textarea class="widefat redactor_content" id="<?php echo $this->get_field_id('box2'); ?>" name="<?php echo $this->get_field_name('box2'); ?>" style="width: 600px;"><?php echo $box2; ?></textarea>
            </label>
        </p>
        <p>
            <label for="<?php echo $this->get_field_id('box3'); ?>">Box 3:
                <textarea class="widefat redactor_content" id="<?php echo $this->get_field_id('box3'); ?>" name="<?php echo $this->get_field_name('box3'); ?>" style="width: 600px;"><?php echo $box3; ?></textarea>
            </label>
        </p>
        <p>
            <label for="<?php echo $this->get_field_id('box4'); ?>">Box 4:
                <textarea class="widefat redactor_content" id="<?php echo $this->get_field_id('box4'); ?>" name="<?php echo $this->get_field_name('box4'); ?>" style="width: 600px;"><?php echo $box4; ?></textarea>
            </label>
        </p>
        <!--Activate Redactor-->
        <script type="text/javascript">
            jQuery('.redactor_content').destroyEditor();
            redactor_editor();
        </script>
        <?php
    }

    function widget($args, $instance)
    {
        extract($args, EXTR_SKIP);

        $box1 = empty($instance['box1']) ? '' : apply_filters('widget_text', $instance['box1']);
        $box2 = empty($instance['box2']) ? '' : apply_filters('widget_text', $instance['box2']);
        $box3 = empty($instance['box3']) ? '' : apply_filters('widget_text', $instance['box3']);
        $box4 = empty($instance['box4']) ? '' : apply_filters('widget_text', $instance['box4']);
        $boxqty = empty($instance['boxqty']) ? '' : apply_filters('widget_title', $instance['boxqty']);

        if($boxqty > 4)
        {
            echo "<div class='sixteen columns'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";
        }
        if($boxqty < 1)
        {
            echo "<div class='sixteen columns'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";
        }

        if($boxqty == 1)
        {
            echo "<div class='sixteen columns'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";
        }

        if($boxqty == 2)
        {
            echo "<div class='eight columns'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";

            echo "<div class='eight columns'><div class='box padding'>";
            echo $box2;
            echo "</div></div>";
            echo "<div class='clearfix'></div>";
        }

        if($boxqty == 3)
        {
            echo "<div class='one-third column'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";

            echo "<div class='one-third column'><div class='box padding'>";
            echo $box2;
            echo "</div></div>";

            echo "<div class='one-third column'><div class='box padding'>";
            echo $box3;
            echo "</div></div>";
            echo "<div class='clearfix'></div>";
        }

        if($boxqty == 4)
        {
            echo "<div class='four columns'><div class='box padding'>";
            echo $box1;
            echo "</div></div>";

            echo "<div class='four columns'><div class='box padding'>";
            echo $box2;
            echo "</div></div>";

            echo "<div class='four columns'><div class='box padding'>";
            echo $box3;
            echo "</div></div>";

            echo "<div class='four columns'><div class='box padding'>";
            echo $box4;
            echo "</div></div>";
            echo "<div class='clearfix'></div>";
        }
    }
}
add_action('widgets_init', create_function('', 'return register_widget("Sample_Widget");'));