/*generates content for gallery slider when 'sly' mode is set*/
        static function get_post_img_slideshow($post_id, $size="gallery_format_slider"){

            /*check the meta data where the attached image ids are stored*/

            $post_image_gallery_meta = get_post_meta( $post_id, '_post_image_gallery', true );

            if(strlen($post_image_gallery_meta) && 'Array' != $post_image_gallery_meta){
                $product_image_gallery = $post_image_gallery_meta;

                $img_id_array = array_filter( explode( ',', $product_image_gallery ) );
            }else{
                //backward compatibility with version prev to 1.1
                $attachet_gallery_ids = meta::get_meta( $post_id, 'imagesattached' );

                if(isset($attachet_gallery_ids['img_ids']) && strlen($attachet_gallery_ids['img_ids'])){
                    /*mata is stored as a string of numbers separated by comma (ex: 909,914,913,912,911,910,908)*/
                    $img_id_array =  explode(',', $attachet_gallery_ids['img_ids']);  //create an array from the string


                }
            }


            if(isset($img_id_array) && is_array($img_id_array)){
                foreach ($img_id_array as $value) {
                    $attachments[$value] = $value; // create attachments array in hte format that will work for us
                }
            }


            if(!isset($attachments)){ // if no meta is attached to the post then the gallery wil be created from attached images
                $thumb_ID = get_post_thumbnail_id($post_id);
                $attachments = get_children(array('post_parent' => $post_id,
                        'post_status' => 'inherit',
                        'post_type' => 'attachment',
                        'post_mime_type' => 'image',
                        'order' => 'ASC',
                        'exclude' => $thumb_ID,
                        'orderby' => 'menu_order ID'));
            }




            if(count($attachments) > 0){
            ?>
            <div class="entry-header" >
                <div class="frame" id="centered">

                    <ul class="clearfix">
                        <?php
                            $pretty_colection_id = mt_rand(0,9999);

                            if($size== "gallery_format_slider"){
                                $images_to_show_first = 9;
                            }else{
                                $images_to_show_first = 5;
                            }

                            $additional_items = ''; /*in this string we will store the images that are left after loading the number of images defined in $images_to_show_first var*/
                            $counter = 0;
                            foreach($attachments as $att_id => $attachment) {
                                $full_img_url = wp_get_attachment_url($att_id);

                                $thumbnail_url = aq_resize( $full_img_url, get_aqua_size($size), get_aqua_size($size, 'height'), false, false ); //resize img, Return an array containing url, width, and height.

                                //$thumbnail_url= wp_get_attachment_image_src( $att_id, $size);

                                $alt = get_post_meta($att_id, '_wp_attachment_image_alt', true);


                                if($counter < $images_to_show_first){
                                    $src = $thumbnail_url[0]; // for the first X images we will give original img src
                                }else{
                                    $src = get_template_directory_uri().'/images/grey.gif';  // for the rest of the images we will load a 1px image to not load the page
                                }

                                //$caption    = image::caption( $att_id );
                                $attachment_info = get_post($att_id); //deb::e($attachment_info );
                                $caption = $alt;

                                global $wp_query;
                                $post_now = $wp_query -> queried_object;


                                ob_start();
                                ob_clean();

                        ?>
                                <li class="relative">

                                        <?php if (options::logic('blog_post', 'show_sly_caption')  && meta::logic( $post_now , 'gallerytype' , 'show_sly_caption' )) {  ?>
                                            <div class="sly-caption"><?php echo $caption; ?></div>
                                        <?php }?>

                                        <img class="lazy" src="<?php echo $src; ?>"  data-original="<?php echo $thumbnail_url[0]; ?>" alt="<?php echo $caption; ?>" width="<?php echo $thumbnail_url[1]; ?>" height="<?php echo $thumbnail_url[2]; ?>" data-width="<?php echo $thumbnail_url[1]; ?>" data-height="<?php echo $thumbnail_url[2]; ?>" alt="" />

                                    <?php if( options::logic( 'blog_post' , 'enb_lightbox' )){ ?>
                                    <div class="zoom-image">
                                        <a href="<?php echo $full_img_url; ?>" data-rel="prettyPhoto[<?php echo $pretty_colection_id; ?>]" title="<?php echo $caption; ?>">&nbsp;</a>
                                    </div>
                                    <?php } if (options::logic('styling', 'stripes')) {  ?>
                                        <div class="stripes" >&nbsp;</div>
                                    <?php }?>
                                </li>
                        <?php
                                $li_item = ob_get_clean();

                                if($counter < $images_to_show_first){
                                    // we output the first X images
                                    $src = $thumbnail_url[0];
                                    echo $li_item;
                                }else{
                                    // the other images are stored into a string
                                    $additional_items .= $li_item;

                                }
                                $counter++;
                            }
                        ?>
                    </ul>
                    <?php
                        if( strlen( $additional_items) ){
                            //if there are any images in the additional items, then we will create a hidded DIV with this images
                            echo '<div class="additional_items" style="display:none">'.$additional_items.'</div>';
                        }
                    ?>
                </div>
                <div class="scrollbar">
                    <div class="handle">
                        <div class="mousearea"></div>
                    </div>
                </div>
                <div class="controls center">
                    <button class="btn prev"><i class="icon-prev"></i></button>
                    <button class="btn next"><i class="icon-next"></i></button>
                </div>
            </div>
            <?php
            }else{
                ?>
                    <div class="entry-header noimages" >
                        <div class="frame" id="centered">
                            <h3><?php _e('There are no images attached to this gallery','cosmotheme'); ?></h3>

                        </div>
                    </div>
                <?php
            }

        }