diff --git a/pending_bookings.php b/pending_bookings.php
index fbd0ed5..794b9e4 100644
--- a/pending_bookings.php
+++ b/pending_bookings.php
@@ -689,7 +689,14 @@ try {
             calendarGrid.querySelectorAll('.calendar-day').forEach(day => {
                 day.classList.remove('selected');
             });
-            document.querySelector(`[data-date="${date}"]`).classList.add('selected');
+            
+            // 找到当前日历中的日期元素
+            const calendarDays = calendarGrid.querySelectorAll('.calendar-day');
+            calendarDays.forEach(day => {
+                if (day.dataset.date === date) {
+                    day.classList.add('selected');
+                }
+            });
             
             // 生成时间段
             generateTimeSlots(submissionId, date);
@@ -717,6 +724,7 @@ try {
                     const slotDiv = document.createElement('div');
                     slotDiv.className = `time-slot ${isPast ? 'past' : ''} ${isBooked ? 'booked' : 'available'}`;
                     slotDiv.textContent = timeString;
+                    slotDiv.dataset.time = timeString;
                     slotDiv.onclick = () => selectTimeSlot(submissionId, timeString);
                     
                     timeGrid.appendChild(slotDiv);
@@ -763,7 +771,7 @@ try {
                 slot.classList.remove('selected');
             });
             
-            const slotElement = timeGrid.querySelector(`[onclick="selectTimeSlot(${submissionId}, '${time}')"]`);
+            const slotElement = timeGrid.querySelector(`[data-time="${time}"]`);
             if (slotElement) {
                 slotElement.classList.add('selected');
             }