$(document).ready(function() {
    var autoPlayTime=4000;
    autoPlayTimer = setInterval( autoPlay, autoPlayTime);
    function autoPlay(){
        Slidebox('next');
    }
    $('#slidebox .next').click(function () {
        Slidebox('next','stop');
    });
    $('#slidebox .previous').click(function () {
        Slidebox('previous','stop');
    });
    var yPosition=($('#slidebox').height()-$('#slidebox .next').height())/2;
    $('#slidebox .next').css('top',yPosition);
    $('#slidebox .previous').css('top',yPosition);
    $('#slidebox .thumbs a:first-child').removeClass('thumb').addClass('selected_thumb');
    $("#slidebox .content").each(function(i){
        slideboxTotalContent=i*$('#slidebox').width();  
        $('#slidebox .container').css("width",slideboxTotalContent+$('#slidebox').width());
    });
});

function Slidebox(slideTo,autoPlay){
    var animSpeed=1000; //animation speed
    var easeType='easeInOutExpo'; //easing type
    var sliderWidth=$('#slidebox').width();
    var leftPosition=$('#slidebox .container').css("left").replace("px", "");
    if( !$("#slidebox .container").is(":animated")){
        if(slideTo=='next'){ //next
            if(autoPlay=='stop'){
                clearInterval(autoPlayTimer);
            }
            if(leftPosition==-slideboxTotalContent){
                $('#slidebox .container').animate({left: 0}, animSpeed, easeType); //reset
                $('#slidebox .thumbs a:first-child').removeClass('thumb').addClass('selected_thumb');
                $('#slidebox .thumbs a:last-child').removeClass('selected_thumb').addClass('thumb');
            } else {
                $('#slidebox .container').animate({left: '-='+sliderWidth}, animSpeed, easeType); //next
                $('#slidebox .thumbs .selected_thumb').next().removeClass('thumb').addClass('selected_thumb');
                $('#slidebox .thumbs .selected_thumb').prev().removeClass('selected_thumb').addClass('thumb');
            }
        } else if(slideTo=='previous'){ //previous
            if(autoPlay=='stop'){
                clearInterval(autoPlayTimer);
            }
            if(leftPosition=='0'){
                $('#slidebox .container').animate({left: '-'+slideboxTotalContent}, animSpeed, easeType); //reset
                $('#slidebox .thumbs a:last-child').removeClass('thumb').addClass('selected_thumb');
                $('#slidebox .thumbs a:first-child').removeClass('selected_thumb').addClass('thumb');
            } else {
                $('#slidebox .container').animate({left: '+='+sliderWidth}, animSpeed, easeType); //previous
                $('#slidebox .thumbs .selected_thumb').prev().removeClass('thumb').addClass('selected_thumb');
                $('#slidebox .thumbs .selected_thumb').next().removeClass('selected_thumb').addClass('thumb');
            }
        } else {
            var slide2=(slideTo-1)*sliderWidth;
            if(leftPosition!=-slide2){
                clearInterval(autoPlayTimer);
                $('#slidebox .container').animate({left: -slide2}, animSpeed, easeType); //go to number
                $('#slidebox .thumbs .selected_thumb').removeClass('selected_thumb').addClass('thumb');
                var selThumb=$('#slidebox .thumbs a').eq((slideTo-1));
                selThumb.removeClass('thumb').addClass('selected_thumb');
            }
        }
    }
}