function showbig(url, width, height, alt) {
    myheight = Math.min((height > 0) ? height + 80 : 41, 600);
    mywidth = Math.min((width > 0) ? width + 40 : 41, 700);
    myalt = encodeURIComponent(alt);
    myid = url.substr(7, 37);
    
    window.open("/photo.html?id=" + 
	myid +
	"&alt=" + myalt, 'Фотография',
	"dependent=yes,directories=no,fullscreen=no,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no,titlebar=no,toolbar=no,modal=yes,dialog=yes,top=" + 
	(screen.height - myheight) / 2 +
	",left=" + 
	(screen.width - mywidth) / 2 + 
	",width=" + mywidth + ",height=" + myheight + 
	",innerWidth=" + mywidth + ",innerHeight=" + myheight);
}