function showCalender(fieldId)
{
	if (field = document.getElementById(fieldId))
	{
		var w = window.open('callender.php?name=' + escape(fieldId) + '&value=' + escape(field.value)
			, '_blank'
			, 'height=200,width=225,channelmode=no,directories=no,fullscreen=no,location=no,menubar=no,'
			+ 'resizable=no,scrollbars=no,status=no,titlebar=no,toolbar=no');
	}
}