function pickupDate(objField, path, left, top) {
	if (top==null) top=Math.round((screen.Height-165)/2);
	if (left==null) left=Math.round((screen.Width-230)/2);	
	var win = window.open(path+"calendar.html?fname="+objField.name+"&date="+objField.value, 
		"Kalender", 'width=230, height=165, resizable=no, menubar=no, top='+top+', left='+left);
	win.focus();
	return win;
}