function displayWindow(theURL,winName,width,height,features) { //v3.1
    var window_width = width;
    var window_height = height;
    var newfeatures= features;
    var window_top = (screen.height-window_height)/2;
    var window_left = (screen.width-window_width)/2;
    newWindow=window.open(''+ theURL + '',''+ winName + '','width=' + window_width + ',height=' + window_height + ',top=' + window_top + ',left=' + window_left + ',features=' + newfeatures + '');
    newWindow.focus();
}
function apriFinestra(url, myname, w, h, prop, res) {
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = "scrollbars="+prop+",height="+h+",width="+w+",top="+wint+",left="+winl+",resizable="+res+",status=yes";
    var win;
    win = window.open(url, myname, winprops);
 if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function foto(str,w,h) {
	var scrolla="no";
	if(w>screen.width-37) {
		w=screen.width;
		scrolla="yes";
	};
	if(h>screen.height-30) {
		h=screen.height;
		scrolla="yes";
	};
	finestra = window.open("visualizza_foto.php?foto="+str,Math.round(1000*Math.random()).toString(),'scrollbars='+scrolla+',resizable=no,width='+w+',height='+h+',status=no,location=no,toolbar=no');
}