.button_calendar{
	FONT-FAMILY: Arial, Verdana;
	HEIGHT: 18px ;
	WIDTH: 18px;
	BORDER:0px;
	FONT-SIZE: 9px;
	CURSOR: pointer;
	BACKGROUND-IMAGE: url(zpcal/bot-calendar.gif);
	BACKGROUND-COLOR: transparent ;
	BACKGROUND-POSITION: center;
}