jQuery Datepicker Day by Day disable dates

day-by-day-disable-dates

$('#nationalPicker').datepick({ 
    onDate: nationalDays, showTrigger: '#calImg'}); 
 
var natDays = [[1, 26, 'au', 'Australia'], [2, 6, 'nz', 'New Zealand'], 
    [3, 17, 'ie', 'Ireland'], [4, 27, 'za', 'South Africa'], 
    [5, 25, 'ar', 'Argentina'], [6, 6, 'se', 'Sweden'], 
    [7, 4, 'us', 'United States'], [8, 17, 'id', 'Indonesia'], 
    [9, 7, 'br', 'Brazil'], [10, 1, 'cn', 'China'], 
    [11, 22, 'lb', 'Lebanon'], [12, 12, 'ke', 'Kenya']]; 
 
function nationalDays(date, inMonth) { 
    if (inMonth) { 
        for (i = 0; i < natDays.length; i++) { 
            if (date.getMonth() + 1 == natDays[i][0] && 
                    date.getDate() == natDays[i][1]) { 
                return {dateClass: natDays[i][2] + '_day', 
                    selectable: false, title: natDays[i][3]}; 
            } 
        } 
    } 
    return {}; 
}