const startDate = new Date('2020-05-31');
        const endDate = new Date();
        let currentDate = new Date();

        function generateCalendar(year, month) {
            const calendarDiv = document.getElementById('calendar');
            calendarDiv.innerHTML = '';
            const table = document.createElement('table');
            const header = document.createElement('tr');
            const headers = ['الأحد', 'الإثنين', 'الثلاثاء', 'الأربعاء', 'الخميس', 'الجمعة', 'السبت'];
            headers.forEach(day => {
                const th = document.createElement('th');
                th.innerText = day;
                header.appendChild(th);
            });
            table.appendChild(header);

            const firstDay = new Date(year, month, 1);
            const lastDay = new Date(year, month + 1, 0);
            const formattedMonth = String(month + 1).padStart(2, '0');
            const monthYear = firstDay.toLocaleString('default', { year: 'numeric' });
            document.getElementById('currentMonth').innerText = formattedMonth + ' / ' + monthYear;


            let row = document.createElement('tr');
            for (let i = 0; i < firstDay.getDay(); i++) {
                const cell = document.createElement('td');
                row.appendChild(cell);
            }

            for (let day = 1; day <= lastDay.getDate(); day++) {
                if (row.children.length === 7) {
                    table.appendChild(row);
                    row = document.createElement('tr');
                }

                const cell = document.createElement('td');
                const linkDate = new Date(year, month, day);
                const formattedMonth = String(month + 1).padStart(2, '0');
                const formattedDay = String(day).padStart(2, '0');

                if (linkDate >= startDate && linkDate < endDate) {
                    const link = document.createElement('a');
                    link.href = 'https://www.gold-price-daily.com/gold-dk/'+year+'-'+formattedMonth+'-'+formattedDay+'/';
                    link.innerText = formattedDay;
                    cell.appendChild(link);
                } else {
                    cell.innerText = formattedDay;
                }
                
                row.appendChild(cell);
            }

            while (row.children.length < 7) {
                const cell = document.createElement('td');
                row.appendChild(cell);
            }

            table.appendChild(row);
            calendarDiv.appendChild(table);
            
            updateButtonStates();
        }

        function prevMonth() {
            currentDate.setMonth(currentDate.getMonth() - 1);
            generateCalendar(currentDate.getFullYear(), currentDate.getMonth());
        }

        function nextMonth() {
            currentDate.setMonth(currentDate.getMonth() + 1);
            generateCalendar(currentDate.getFullYear(), currentDate.getMonth());
        }

        function updateButtonStates() {
            const prevBtn = document.getElementById('prevBtn');
            const nextBtn = document.getElementById('nextBtn');

            if (currentDate <= startDate) {
                prevBtn.disabled = true;
            } else {
                prevBtn.disabled = false;
            }

            if (currentDate.getFullYear() === endDate.getFullYear() && currentDate.getMonth() === endDate.getMonth()) {
                nextBtn.disabled = true;
            } else {
                nextBtn.disabled = false;
            }
        }

        generateCalendar(currentDate.getFullYear(), currentDate.getMonth());