Question

Not sure what’s wrong, but elements wont fade in on http://kimberlywarner.com/

$('#photos').width(galleryWidth).animate(
        {
            opacity: 1
        }, 
        1500, 
        'easeInOutQuint',
        function() 
        {
            // Animation complete.
        }
    );

Answer 1

You need to set it to 0 first because IE does not support opacity by default (jquery will handle the internals).

$('#photos').width(galleryWidth).css('opacity',0).animate(
        {
            opacity: 1
        }, 
        1500, 
        'easeInOutQuint',
        function() 
        {
            // Animation complete.
        }
    );