viewportSize: function(){
            var viewportSize = $j('body').width();
            var viewportName;

            switch(true) {
                case (viewportSize<767):
                viewportName = 'mobile touch';
                break;
                case (viewportSize<959):
                viewportName = 'tabletHorizontal touch';
                break;
                case (viewportSize<1199):
                viewportName = 'tabletVertical touch';
                break;
                case (viewportSize>1200):
                viewportName = 'desktop';
                break;
                default:
                viewportName = 'error';
            }

            $j('body').removeClass('mobile tabletHorizontal tabletVertical desktop touch');
            $j('body').addClass(viewportName);
        },