Date picker remove dates and weekends

gistfile1.txt

var holidays= ["2014-7-30","2015-07-29","2013-03-16"]

$('input').datepicker({
beforeShowDay:  function(date){
    var string = jQuery.datepicker.formatDate('yy-mm-dd', date);
     var noWeekend = $.datepicker.noWeekends(date);
         if (noWeekend[0]) {
        return  [$.inArray(string, holidays) == -1];
        }
        else
        return noWeekend;
    }
});