var a=0;
var Browser;

  if (navigator.appName=='Netscape' && navigator.appVersion.charAt(0)>='4')
     {
       window.document.write("<LINK REL='stylesheet' TYPE='text/css' HREF='../style/main_ns.css'>");
     }
  if (navigator.appName=='Microsoft Internet Explorer' && navigator.appVersion.charAt(0)>='4')
     {
       window.document.write("<LINK REL='stylesheet' TYPE='text/css' HREF='../style/main.css'>");
     }