var currentDateInput = null;

function calendar (el) {

	currentDateInput = el;
	
	var isIe = false, isMoz = false;
	var ua = navigator.userAgent.toLowerCase();
	if (/gecko/i.test(ua)) {
		isMoz = true;
	} else if (/msie/i.test(ua)) {
		isIe = true;
	}

	if (window.showModalDialog) {
		window.showModalDialog('/common/util/datepicker.html', el, 'dialogWidth:174px;dialogHeight:212px;dialogLeft:230px;dialogTop:400px;status:no;center:yes');
	} else {
		window.open('/common/util/datepicker.html', 'datepicker', 'width=164px,height=178px,left=230,top=400,status=0,toolbar=0,scrollbars=0,resizable=0,modal=yes');
	}

}