var piktogramyOnResize = function() {
            var screenWidth = document.body.clientWidth || document.documentElement.clientWidth || self.innerWidth;    
            if (screenWidth < 1120) {
                $('#piktogramy_prave').hide();
            }
            else {
                $('#piktogramy_prave').show();
            }
}

$(function() {
		    $("a[rel^=lightbox]").lightBox(); 
      
            piktogramyOnResize();
            
            $(window).resize(piktogramyOnResize);
});