$(document).ready(function(){


// PRETTY PHOTO INIT
$("a[rel^='prettyPhoto']").prettyPhoto({theme:'dark_square', slideshow:5000, autoplay_slideshow:true, opacity: 0.60, counter_separator_label: ' of ', show_title: false,});

//Open Gallery caption
$(window).load(function(){  
    //for each description div...  
    $('div.post-gallery-caption').each(function(){  
        //...set the opacity to 0...  
        $(this).css('opacity', 0.6);   
        //...set the display to block  
        $(this).css('display', 'block');  
    });  
  
    $('div.post-thumb').hover(function(){  
        //when mouse hover over the wrapper div  
        //get it's children elements with class description '  
        //and show it using fadeTo  
        $(this).children('.post-gallery-caption').stop().fadeTo(500, 0.8);  
    },function(){  
        //when mouse out of the wrapper div  
        //use fadeTo to hide the div  
        $(this).children('.post-gallery-caption').stop().fadeTo(500, 0.6);  
    });  
  
});  

$(window).load(function(){  
    //for each description div...  
    $('div.portfolio-gallery-caption').each(function(){  
        //...set the opacity to 0...  
        $(this).css('opacity', 0);   
        //...set the display to block  
        $(this).css('display', 'block');  
    });  
  
    $('div.portfolio-thumb').hover(function(){  
        //when mouse hover over the wrapper div  
        //get it's children elements with class description '  
        //and show it using fadeTo  
        $(this).children('.portfolio-gallery-caption').stop().fadeTo(500, 0.6);  
    },function(){  
        //when mouse out of the wrapper div  
        //use fadeTo to hide the div  
        $(this).children('.portfolio-gallery-caption').stop().fadeTo(500, 0);  
    });  
  
});  


});
<!-- end document ready -->

<!-- PrettyPhoto init -->