<script>
$(function() {
var pull = $('#pull');
menu = $('nav ul');
menuHeight = menu.height();
$(pull).on('click', function(e) {
e.preventDefault();
menu.slideToggle();
});
$(window).resize(function(){
var w = $(window).width();
if(w > 320 && menu.is(':hidden')) {
menu.removeAttr('style');
}
});
});
</script>