$(function() { var width = $('.ImageGallery img').width(); var height = $('.ImageGallery img').height(); var style = 'style="width:' + width / 2 + 'px;height:' + height + 'px;"'; var linkPrevious = $('a.Previous').attr('href'); var linkNext = $('a.Next').attr('href'); if (linkPrevious != undefined) { $('.ImageGallery img').after('<a id="imagePrevious" href="' + linkPrevious + '"></a>') } if (linkNext != undefined) { $('.ImageGallery img').after('<a id="imageNext" href="' + linkNext + '"></a>') } });