var thumbsLine = -1;
var currentLine = 0;
var images = [];


function InitPortfolioGallery() {
    
    var itemCount = $('#thumbs #thumbsHolder img').size();
    if (itemCount <= 4) {
        $('#thumbs #next,#prev').css('display', 'none');
    }

    for (var i = 0; i < itemCount + 1; i++) {
        if (i % 4 == 0)
            thumbsLine++;
    }
}


function igNext() {

    if (currentLine != thumbsLine - 1) {

        if (currentLine == thumbsLine - 2) {
            $('#thumbs #next').css('background', 'url(images/thumbsNextDisabled.jpg) no-repeat center center');
            $('#thumbs #next').css('cursor', 'default');
        }
        currentLine++;
        $('#thumbs #thumbsHolder #overflow').animate({ left: '-=477px' }, 500);
        $('#thumbs #prev').css('background', 'url(images/thumbsPrev.jpg) no-repeat center center');
        $('#thumbs #prev').css('cursor', 'pointer');
    }

}

function igPrev() {



    if (currentLine != 0) {
        if (currentLine == 1) {
            $('#thumbs #prev').css('background', 'url(images/thumbsPrevDisabled.jpg) no-repeat center center');
            $('#thumbs #prev').css('cursor', 'default');
        }
        currentLine--;
        $('#thumbs #thumbsHolder #overflow').animate({ left: '+=477px' }, 500);
        $('#thumbs #next').css('background', 'url(images/thumbsNext.jpg) no-repeat center center');
        $('#thumbs #next').css('cursor', 'pointer');
    }

}