if (parent.frames.length > 0)
   self.location.href="index.html";

if (navigator.platform.indexOf("Win") < 0 || screen.width > 1100)
  document.writeln("<link rel=stylesheet type=\"text/css\" href=\"_main_m.css\">")
else
  document.writeln("<link rel=stylesheet type=\"text/css\" href=\"_main.css\">");