NazevProhlizece=(navigator.appName);



//internet explorer

if (NazevProhlizece=="Microsoft Internet Explorer" ) 
{document.write('<LINK Rel="stylesheet" Href="ie4.css" '
          + 'Type="text/css">');}

//mozilla a netscape 7

else if (NazevProhlizece=="Netscape")
{document.write('<LINK Rel="stylesheet" Href="net5.css" '
          + 'Type="text/css">');}