/**
 * @author pbellusci
 */
var w3Slider = {

    _classContainer: '.content_case',
    _classLinks: '.numCases',

    show: function(linkButton, activeClassLink) {
       
       activeClassLink = activeClassLink || 'active-case';

       linkButton = linkButton || null;
       var index = $(linkButton).attr('index');
       
       $(linkButton).addClass('active-case');

        if(typeof(index) == null) {
            throw new Error('Index couldn\'t be null');
            return;
        }

        $(w3Slider._classContainer).each(
            function(){
                if($(this).attr('index') == index) {
                    $(this).show();
                } else {
                    $(this).hide();
                }
            }
        );// End ClassEach

        $(w3Slider._classLinks).each(
            function(){
                if( $(this).attr('index') == $(linkButton).attr('index') ) {
                    $(this).addClass(activeClassLink);
                } else {
                    $(this).removeClass(activeClassLink);
                }
            }
        );// End ClassEach

    }

}