
function popup (url) {
        var name = 'Claudio Ciardi';
        var w = 520;
        var h = 545;
        var n3 = (navigator.appName.indexOf('Netscape')!=-1 && navigator.appVersion.indexOf('3.')!=-1)?true:false;
        var ww = (n3)?(parseInt(w)+20):parseInt(w);
        var wh = (n3)?(parseInt(h)+20):parseInt(h);

        var winname = parseString (name);
        var wnd = window.open('', winname, 'width='+ww+',height='+(wh+0)+',left='+(screen.width-ww)/2+',top='+(screen.height-wh)/2+',');
        var code =  "<html>\n<head>\n" +
                                "<title>" + name + "</title>\n</head>\n" +
                                "<body bgcolor=#000033>\n" +
                                "<center>\n<img src=\"" + url + "\"><br>\n" +
                                "</center>\n</body>\n</html>"
        wnd.document.write(code);
        wnd.document.close();
}

function parseString (str) {
	var notAllowed = ":`'\";.,/\\ +8&^%$#@!";
	var output = "";
	for (i=0; i<str.length; i++) {
		c = str.charAt(i);
		if (notAllowed.indexOf(c)!=-1) continue;
		else output += c;
	}
	return output;
}


