function meteo_win(str) {
	var width="558", height="406";
	var left = (screen.width/2) - width/2;
	var top = (screen.height/2) - height/2;
	var styleStr = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,sresizable=no,copyhistory=no,width='+width+',height='+height+',left='+left+',top='+top+',screenX='+left+',screenY='+top;
	var finestra = window.open(str,'nuova',styleStr); 
}