รบกวนทีครับ คือผมใช้ datepicker ที่เป็น popup อยู่ครับ ที่นี้ผมต้องใช้ datepicker แบบเดียวกัน 2 อัน

<link rel="stylesheet" type="text/css" href="epoch_styles.css" />
<script type="text/javascript" src="epoch_classes.js"></script>
<script type="text/javascript">

/*You can also place this code in a separate file and link to it like epoch_classes.js*/
	var bas_cal,dp_cal,ms_cal;      
window.onload = function () {
	dp_cal  = new Epoch('epoch_popup','popup',document.getElementById('popup_container1'));
};
</script>
<link rel="stylesheet" type="text/css" href="epoch_styles.css" />
<script type="text/javascript" src="epoch_classes.js"></script>
<script type="text/javascript">

/*You can also place this code in a separate file and link to it like epoch_classes.js*/
	var bas_cal,dp_cal,ms_cal;      
window.onload = function () {
	dp_cal  = new Epoch('epoch_popup','popup',document.getElementById('popup_container2'));
};
</script>

<link rel="stylesheet" type="text/css" href="epoch_styles.css" />
<script type="text/javascript" src="epoch_classes.js"></script>
<script type="text/javascript">

/*You can also place this code in a separate file and link to it like epoch_classes.js*/
	var bas_cal,dp_cal,ms_cal, dp_cal2;      
window.onload = function () {
	dp_cal  = new Epoch('epoch_popup','popup',document.getElementById('popup_container1'));
dp_cal2 = new Epoch('epoch_popup2','popup2',document.getElementById('popup_container2'));
};
</script>

<link rel="stylesheet" type="text/css" href="epoch_styles.css" />
<script type="text/javascript" src="epoch_classes.js"></script>
<script type="text/javascript">

/*You can also place this code in a separate file and link to it like epoch_classes.js*/
	var bas_cal,dp_cal,ms_cal, dp_cal2;      
window.onload = function () {
	dp_cal  = new Epoch('epoch_popup','popup',document.getElementById('popup_container1'));
dp_cal2 = new Epoch('epoch_popup2','popup',document.getElementById('popup_container2'));
};
</script>

<!-- html -->
<input type="text" name="date1" id="popup_container1">
<input type="text" name="date2" id="popup_container2">