var serialScrollNbImagesDisplayed;
var serialScrollNbImages;
var serialScrollActualImagesIndex;

function serialScrollFixLock(event, targeted, scrolled, items, position){
    $('#productscategory_scroll_left').css('cursor', position == 0 ? 'default' : 'pointer').fadeTo(500, position == 0 ? 0.2 : 1);
    $('#productscategory_scroll_right').css('cursor', position + serialScrollNbImagesDisplayed == serialScrollNbImages ? 'default' : 'pointer').fadeTo(500, position + serialScrollNbImagesDisplayed == serialScrollNbImages ? 0.2 : 1);
    return true;
}

$(document).ready(function(){
//init the serialScroll for thumbs
    serialScrollNbImages = $('#productscategory_list li').length;
    serialScrollNbImagesDisplayed = 5;
    serialScrollActualImagesIndex = 0;
    $('#productscategory_list').serialScroll({
        items:'li',
        prev:'a#productscategory_scroll_left',
        next:'a#productscategory_scroll_right',
        axis:'x',
        offset:0,
        stop:true,
        onBefore:serialScrollFixLock,
        duration:300,
        step: 1,
        lock: false,
        force:false,
        cycle:false
    });
    $('#productscategory_list').trigger( 'goto', [middle-3] );
});