spw=450;
sph=250;
spt = (screen.height - sph)/2;
spl = (screen.width - spw)/2;
window.open("http://passport.interface.ru/rp/services/sp.asp?spemail=&spset=&splang=&spref=&spcs=&sptest=","int_sp","scrollbars=no,resizable=yes,width="+spw+",height="+sph+",left="+spl+",top="+spt);