with(navigator){nazev=appName;verze=parseInt(appVersion);}
ie4=false;nn4=false;with(window){if(nazev=="Microsoft Internet Explorer"&&verze>=4)ie4=true;else if(nazev=="Netscape"&&verze>=4)nn4=true;else if(nazev=="Opera")opera=true;}
if(ie4)
{document.write("<link rel=\"stylesheet\" href=\"sggs-css/ie.css\">\n");}
else
{if(nn4)
{document.write("<link rel=\"stylesheet\" href=\"sggs-css/mozilla.css\">\n");}
else
{if(opera)
document.write("<link rel=\"stylesheet\" href=\"sggs-css/opera.css\">\n");else
document.write("<link rel\"stylesheet\" href=\"sggs-css/ie.css\">\n");}}