jQuery(document).ready(function($) {
    $('a[href$="jpg"],a[href$="png"],a[href$="gif"]').fancybox({
        'titleShow': false,
        'padding': 50,
        'overlayOpacity': 0.5,
        'autoScale': false,
        'hideOnContentClick': true
    });

    $('a[href$="jpg"],a[href$="png"],a[href$="gif"]').prepend('<img src="http://efekat.com/efekatwpmf/wp-content/uploads/2011/06/Zoom-In.png" style="position: absolute; margin: 10px 0 0 10px;" />');
    $('a[href$="jpg"],a[href$="png"],a[href$="gif"]').css({
               position: 'relative',
               display: 'block'     
    });
});