var Win=(navigator.userAgent.indexOf("Win")!=-1);
var Mac=(navigator.userAgent.indexOf("Mac")!=-1);
var Fir=(navigator.userAgent.indexOf("Firefox")!=-1);

var Explorer=(navigator.appName.indexOf("Explorer")!=-1);
var Netscape=(navigator.appName.indexOf("Netscape")!=-1);

var Version=(navigator.userAgent.indexOf("Netscape6/6.2") != -1);


if
(Fir)
{
  if(Mac)
  {document.write('<LINK rel="stylesheet" href="english/css/firefox_mac/top.css" type="text/css">');}
  
  else
  {document.write('<LINK rel="stylesheet" href="english/css/firefox/top.css" type="text/css">');}

}

else if
(Mac)
{document.write('<LINK rel="stylesheet" href="english/css/mac/top.css" type="text/css">');}

else if
(Win && Explorer)
{
  if(navigator.appVersion.indexOf("MSIE 7.0") != -1)
  {document.write('<LINK rel="stylesheet" href="english/css/win_ie7/top.css" type="text/css">');}
  
  else
  {document.write('<LINK rel="stylesheet" href="english/css/win_ie/top.css" type="text/css">');}
}

else if
(Win && Netscape)
{document.write('<LINK rel="stylesheet" href="english/css/win_n/top.css" type="text/css">');}

else
{document.write('<LINK rel="stylesheet" href="english/css/other/top.css" type="text/css">');}