$(document).ready(function(){
    //add js_enabled class for css styles for js layouts
    $('body').addClass('js_enabled');

    var no_list_items = $('ul#portfolio_list li').length-1;
    var curr_item = 0;

    //show first picture
    $('ul#portfolio_list li:not(:first)').hide();


    //
    $('ul#portfolio_list').hover(function(){
        $('.site_caption').eq(curr_item).stop(true,true).animate({
            top: "-300px"
        },"normal")
        },
        function(){
        $('.site_caption').eq(curr_item).stop(true,true).animate({
            top: "-35px"
        },"normal")
    })

    //enable gallery functionality
    //hide previous if first shown
    $('.prev_trigger').hide();
    //next
    $('.next_trigger').live('click',function(){
        $('ul#portfolio_list li').hide();
        curr_item++;
        if(curr_item==no_list_items){
            //disable functionality
            $('.next_trigger').hide();
        }else{
            $('.next_trigger').show();
        }
        if(curr_item>0){
            $('.prev_trigger').show()
        }
        $('ul#portfolio_list li').eq(curr_item).fadeIn('slow');
    });
    //prev
    $('.prev_trigger').live('click', function(){
        $('ul#portfolio_list li').hide();
        curr_item--;
        if(curr_item==0){
            //disable functionality
            $('.prev_trigger').hide();
        }else{
            $('.next_trigger').show();
        }
        $('ul#portfolio_list li').eq(curr_item).fadeIn('slow');
    });

})