$('.driver_form input[type="submit"]').click(function() {
		function checkEmptyVal(id) {
			if($(id).val() == '') {
				$(id).click();
				$(id).focus();
				return false;
			}
		}	
                checkEmptyVal('#d_exp_years');
        });

var $expYears = $('#d_exp_years');
$('.driver_form').on('submit', function (e) {
    if ($expYears.val() == '') {
        e.preventDefault();
        $expYears.focus();
        return;
    }
});