function finestra(theURL,winName,anchoV,altoV,X,Y,scro) {
	var anchoP = screen.width;
	var altoP = screen.height;
	if (X =='' || Y =='') {
		var posX = eval((anchoP-anchoV)/2);
		var posY = eval((altoP-altoV)/2);
	} else {
		var posX = eval(X);
		var posY = eval(Y);
	}
	if (winName == '') {
	  var tipusFinestra = "target=blank";
	}
	else {
	  var tipusFinestra = winName;
	}
	window.open	(theURL,tipusFinestra,'status=no,resizable=no,scrollbars='+scro+',left='+posX+',top='+posY+',width='+anchoV+',height='+altoV+'');
}