var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 &&
                parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var isMinIE4 = (document.all) ? 1 : 0;
var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.") >= 0) ? 1 : 0;
var isMinIE5_5=(isMinIE5&&navigator.appVersion.indexOf("5.5")>=0) ? 1:0;
var agt=navigator.userAgent.toLowerCase();
var is_mac    = (agt.indexOf("mac")!=-1) ? 1: 0;
var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) ) ? 1:0;
function set_css() {
var winNS_styles = '<LINK HREF="http://www.them2.com/them2-NSwin.css" REL="STYLESHEET" TYPE="text/css">';
var winIE_styles = '<LINK HREF="http://www.them2.com/them2-IEwin.css" REL="STYLESHEET" TYPE="text/css">';
var macIE_styles = '<LINK HREF="http://www.them2.com/them2-IEmac.css" REL="STYLESHEET" TYPE="text/css">';
var macNS_styles = '<LINK HREF="http://www.them2.com/them2-NSmac.css" REL="STYLESHEET" TYPE="text/css">';
  if (isMinIE4 && !is_mac)
  {
    document.write(winIE_styles);
  }
  else if (isMinNS4 && !is_mac)
  {
    document.write(winNS_styles);
  }
  else if (isMinIE4 && is_mac)
  {
    document.write(macIE_styles);
  }
  else if (isMinNS4 && is_mac)
  {
    document.write(macNS_styles); 
  }
  else
  {
    document.write(winIE_styles);
  }
}