EDIT

import org.apache.log4j.Logger;

import org.openqa.selenium.support.ui.WebDriverWait;

import eu.etaxonomy.dataportal.elements.GalleryImage;

import eu.etaxonomy.dataportal.pages.PortalPage;

import eu.etaxonomy.dataportal.selenium.AllTrue;

import eu.etaxonomy.dataportal.selenium.ChildElementVisible;

import eu.etaxonomy.dataportal.selenium.JUnitWebDriverWait;

    public static final Logger logger = Logger.getLogger(ElementUtils.class);

    /**

     * @param fnListElements

     * @return

     */

    public static List<BaseElement> baseElementsFromFootNoteListElements(List<WebElement> fnListElements) {

        List<BaseElement> footNotes = new ArrayList<BaseElement>();

        for(WebElement fn : fnListElements) {

            footNotes.add(new BaseElement(fn));

        }

        return footNotes;

    }

    /**

     * @param fnkListElements

     * @return

     */

    public static List<LinkElement> linkElementsFromFootNoteKeyListElements(List<WebElement> fnkListElements) {

        List<LinkElement> footNoteKeys = new ArrayList<LinkElement>();

        for(WebElement fnk : fnkListElements) {

            footNoteKeys.add(new LinkElement(fnk));

        }

        return footNoteKeys;

    }

    /**

     * @param wait

     * @return a two dimensional array representing the media items in the gallery, or null if no gallery exists.

     */

    public static List<List<GalleryImage>> getGalleryImages(WebElement webElement, WebDriverWait wait) {

        WebElement gallery = webElement.findElement(By.className("media_gallery"));

        if( gallery == null){

            return null;

        }

        ArrayList<List<GalleryImage>> galleryImageRows = new ArrayList<List<GalleryImage>>();

        List<WebElement> tableRows = gallery.findElements(By.tagName("tr"));

        logger.debug("GalleryImages - total rows " + tableRows.size());

        // loop table rows

        for(int rowId = 0; rowId * 2 < tableRows.size() && tableRows.size() > 0; rowId++ ){

            logger.debug("GalleryImages - gallery row " + rowId );

            List<WebElement> imageCells = tableRows.get(rowId * 2).findElements(By.tagName("td"));

            logger.debug("GalleryImages - number of image cells: " + imageCells.size());

            List<WebElement> captionCells = null;

            if(tableRows.size() > rowId * 2 + 1){

                captionCells = tableRows.get(rowId * 2 + 1).findElements(By.tagName("td"));

                logger.debug("GalleryImages - number of caption cells: " + captionCells.size());

            }

            galleryImageRows.add(new ArrayList<GalleryImage>());

            // loop table cells in row

            for(int cellId = 0; cellId < imageCells.size(); cellId++) {

                logger.debug("cellId:" + cellId);

                WebElement imageCell = imageCells.get(cellId);

                WebElement captionCell = null;

                if(captionCells != null && captionCells.size() > cellId){

                    captionCell = captionCells.get(cellId);

                    wait.until(new AllTrue(

                            new ChildElementVisible(imageCell, By.tagName("img")),

                            new ChildElementVisible(captionCell, By.tagName("dl"))

                    ));

                } else {

                    wait.until(new ChildElementVisible(imageCell, By.tagName("img")));

                }

                galleryImageRows.get(rowId).add(new GalleryImage(imageCell, captionCell));

            }

        }

        return galleryImageRows;

    }