function scs_calendar(field) {
	if (!document.getElementById(field)) {
	    alert ("id missing: " + field);
	    return;
    }
	date=document.getElementById(field).value;
	var queryString;
	queryString = "?field=" + field;
	if (date) queryString += "&date=" + escape(date);
	window.open("/scs_calendar.php" + queryString,"calendar");
}