var agt=navigator.userAgent.toLowerCase();
    var appVer = navigator.appVersion.toLowerCase();

    // *** BROWSER CHECK ***

    var is_minor = parseFloat(appVer);
    var is_major = parseInt(is_minor);

    var is_opera = (agt.indexOf("opera") != -1);
    var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
    var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
    var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
    var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
    var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1); // 020128- abk
    var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // 021205- dmr
    var is_opera8 = (agt.indexOf("opera 8") != -1 || agt.indexOf("opera/8") != -1); // 09-19-2006 jonw 
    var is_opera9 = (agt.indexOf("opera 9") != -1 || agt.indexOf("opera/9") != -1); // 09-19-2006 jonw

    var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
    var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5); // new020128
    var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6); // new021205 -- dmr
    var is_opera8up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6 && !is_opera7); // 09-19-2006 - jonw
    var is_opera9up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6 && !is_opera7 &&!is_opera8); // 09-19-2006 - jonw

    // Note: On IE, start of appVersion return 3 or 4
    // which supposedly is the version of Netscape it is compatible with.
    // So we look for the real version further on in the string
    // And on Mac IE5+, we look for is_minor in the ua; since 
    // it appears to be more accurate than appVersion - 06/17/2004

    var is_mac = (agt.indexOf("mac")!=-1);
    var iePos  = appVer.indexOf('msie');
    if (iePos !=-1) {
       if(is_mac) {
           var iePos = agt.indexOf('msie');
           is_minor = parseFloat(agt.substring(iePos+5,agt.indexOf(';',iePos)));
       }
       else is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)));
       is_major = parseInt(is_minor);
    }

    // ditto Konqueror
                                      
    var is_konq = false;
    var kqPos   = agt.indexOf('konqueror');
    if (kqPos !=-1) {                 
       is_konq  = true;
       is_minor = parseFloat(agt.substring(kqPos+10,agt.indexOf(';',kqPos)));
       is_major = parseInt(is_minor);
    }                                 

    var is_getElementById   = (document.getElementById) ? "true" : "false"; // 001121-abk
    var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false"; // 001127-abk
    var is_documentElement = (document.documentElement) ? "true" : "false"; // 001121-abk

    var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
    var is_khtml  = (is_safari || is_konq);

    var is_gecko = ((!is_khtml)&&(navigator.product)&&(navigator.product.toLowerCase()=="gecko"))?true:false;
    var is_gver  = 0;
    if (is_gecko) is_gver=navigator.productSub;

    var is_fb = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
                 (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
                 (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
                 (is_gecko) && (navigator.vendor=="Firebird"));
    var is_fx = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
                 (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
                 (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
                 (is_gecko) && ((navigator.vendor=="Firefox")||(agt.indexOf('firefox')!=-1)));
    var is_moz   = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
                    (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
                    (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
                    (is_gecko) && (!is_fb) && (!is_fx) &&
                    ((navigator.vendor=="")||(navigator.vendor=="Mozilla")||(navigator.vendor=="Debian")));
    if ((is_moz)||(is_fb)||(is_fx)) {  // 032504 - dmr
       var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0;
       if(is_fx&&!is_moz_ver) {
           is_moz_ver = agt.indexOf('firefox/');
           is_moz_ver = agt.substring(is_moz_ver+8);
           is_moz_ver = parseFloat(is_moz_ver);
       }
       if(!(is_moz_ver)) {
           is_moz_ver = agt.indexOf('rv:');
           is_moz_ver = agt.substring(is_moz_ver+3);
           is_paren   = is_moz_ver.indexOf(')');
           is_moz_ver = is_moz_ver.substring(0,is_paren);
       }
       is_minor = is_moz_ver;
       is_major = parseInt(is_moz_ver);
    }
   var is_fb_ver = is_moz_ver;
   var is_fx_ver = is_moz_ver;

    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)
                && (!is_khtml) && (!(is_moz)) && (!is_fb) && (!is_fx));

    // Netscape6 is mozilla/5 + Netscape6/6.0!!!
    // Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0
    // Changed this to use navigator.vendor/vendorSub - dmr 060502   
    // var nav6Pos = agt.indexOf('netscape6');
    // if (nav6Pos !=-1) {
    if ((navigator.vendor)&&
        ((navigator.vendor=="Netscape6")||(navigator.vendor=="Netscape"))&&
        (is_nav)) {
       is_major = parseInt(navigator.vendorSub);
       // here we need is_minor as a valid float for testing. We'll
       // revert to the actual content before printing the result. 
       is_minor = parseFloat(navigator.vendorSub);
    }

    var is_nav2 = (is_nav && (is_major == 2));
    var is_nav3 = (is_nav && (is_major == 3));
    var is_nav4 = (is_nav && (is_major == 4));
    var is_nav4up = (is_nav && is_minor >= 4);  // changed to is_minor for
                                                // consistency - dmr, 011001
    var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );

    var is_nav6   = (is_nav && is_major==6);    // new 010118 mhp
    var is_nav6up = (is_nav && is_minor >= 6); // new 010118 mhp

    var is_nav5   = (is_nav && is_major == 5 && !is_nav6); // checked for ns6
    var is_nav5up = (is_nav && is_minor >= 5);

    var is_nav7   = (is_nav && is_major == 7);
    var is_nav7up = (is_nav && is_minor >= 7);

    var is_nav8   = (is_nav && is_major == 8);
    var is_nav8up = (is_nav && is_minor >= 8);

    var is_ie   = ((iePos!=-1) && (!is_opera) && (!is_khtml));
    var is_ie3  = (is_ie && (is_major < 4));

    var is_ie4   = (is_ie && is_major == 4);
    var is_ie4up = (is_ie && is_minor >= 4);
    var is_ie5   = (is_ie && is_major == 5);
    var is_ie5up = (is_ie && is_minor >= 5);
    
    var is_ie5_5  = (is_ie && (agt.indexOf("msie 5.5") !=-1)); // 020128 new - abk
    var is_ie5_5up =(is_ie && is_minor >= 5.5);                // 020128 new - abk
	
    var is_ie6   = (is_ie && is_major == 6);
    var is_ie6up = (is_ie && is_minor >= 6);

    var is_ie7   = (is_ie && is_major == 7);
    var is_ie7up = (is_ie && is_minor >= 7);

// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
    // or if this is the first browser window opened.  Thus the
    // variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.

    var is_aol   = (agt.indexOf("aol") != -1);
    var is_aol3  = (is_aol && is_ie3);
    var is_aol4  = (is_aol && is_ie4);
    var is_aol5  = (agt.indexOf("aol 5") != -1);
    var is_aol6  = (agt.indexOf("aol 6") != -1);
    var is_aol7  = ((agt.indexOf("aol 7")!=-1) || (agt.indexOf("aol7")!=-1));
    var is_aol8  = ((agt.indexOf("aol 8")!=-1) || (agt.indexOf("aol8")!=-1));

    var is_webtv = (agt.indexOf("webtv") != -1);
    
    // new 020128 - abk
    
    var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
    var is_AOLTV = is_TVNavigator;

    var is_hotjava = (agt.indexOf("hotjava") != -1);
    var is_hotjava3 = (is_hotjava && (is_major == 3));
    var is_hotjava3up = (is_hotjava && (is_major >= 3));

    // end new
    
    // *** OS CHECK ***
    var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    var is_mac    = (agt.indexOf("mac")!=-1);
   	var is_sun   = (agt.indexOf("sunos")!=-1);
    var is_sun4  = (agt.indexOf("sunos 4")!=-1);
    var is_sun5  = (agt.indexOf("sunos 5")!=-1);
    var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
    var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
    var is_irix5 = (agt.indexOf("irix 5") !=-1);
    var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
    var is_hpux  = (agt.indexOf("hp-ux")!=-1);
    var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
    var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
    var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
    var is_aix1  = (agt.indexOf("aix 1") !=-1);
    var is_aix2  = (agt.indexOf("aix 2") !=-1);
    var is_aix3  = (agt.indexOf("aix 3") !=-1);
    var is_aix4  = (agt.indexOf("aix 4") !=-1);
    var is_linux = (agt.indexOf("inux")!=-1);
    var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
    var is_unixware = (agt.indexOf("unix_system_v")!=-1);
    var is_mpras    = (agt.indexOf("ncr")!=-1);
    var is_reliant  = (agt.indexOf("reliantunix")!=-1);
    var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) ||
           (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) ||
           (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1));
    var is_sinix = (agt.indexOf("sinix")!=-1);
    var is_freebsd = (agt.indexOf("freebsd")!=-1);
    var is_bsd = (agt.indexOf("bsd")!=-1);
    var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux ||
                 is_sco ||is_unixware || is_mpras || is_reliant ||
                 is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);

	// *** WIN and AOL CONFIGS ***

	if (is_win&&is_aol6){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_aol7){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_aol8){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

	
	// *** MAC and AOL CONFIGS ***
	
	else if (is_mac&&is_aol6){
      document.write("<link href=\"/css/ie_mac.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_aol7){
      document.write("<link href=\"/css/ie_mac.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_aol8){
      document.write("<link href=\"/css/ie_mac.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}


	// *** WIN and IE CONFIGS ***
	else if (is_win&&is_ie5){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_ie6){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_ie7){
      document.write("<link href=\"/css/ie_pc.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}


	// *** WIN and NAV CONFIGS ***
	else  if (is_win&&is_nav5){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
 	else if (is_win&&is_nav7){
      document.write("<link href=\"/css/main_ns.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_nav8){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

	// *** WIN and MOZILLA CONFIGS ***
 	else if (is_win&&is_moz){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

  
   	// *** MAC CONFIGS ***
	else if (is_mac&&is_ie5) {
      document.write("<link href=\"/css/ie_mac.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_nav5){
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_nav7){
      document.write("<link href=\"/css/main_ns.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_nav8){
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

	// *** MAC and SAFARI CONFIGS ***
	else if (is_mac&&is_safari){
      document.write("<link href=\"/css/safari.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

  	// *** MAC and MOZILLA CONFIGS ***
 	else if (is_mac&&is_moz){
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	} 
	
	// *** MAC and OPERA CONFIGS ***
 	else if (is_mac&&is_opera){
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	} 
	
	// *** WIN and MOZILLA CONFIGS ***
 	else if (is_win&&is_opera){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	} 
	
	// *** WIN and FIREFOX FIREBIRD CONFIGS ***
	else if (is_win&&is_fx) { 
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_win&&is_fb) { 
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_fx) { 
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_mac&&is_fb) { 
      document.write("<link href=\"/css/mac_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}

	else if (is_ie3 || is_ie4 || is_nav2 || is_nav3 || is_nav4 || is_nav6 || is_aol3 || is_aol4){
      window.location.href = "/redirect.php";
	}

	// *** UNIX and NAVIGATOR FIREFOX CONFIGS ***
	else if (is_unix&&is_fx) { 
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_unix&&is_fb) { 
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}	
	else if (is_unix&&is_nav5){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
 	else if (is_unix&&is_nav7){
      document.write("<link href=\"/css/main_ns.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}
	else if (is_unix&&is_nav8){
      document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}	
		// ** If the OS cannot be determined
	else {
		document.write("<link href=\"/css/pc_moz.css\" rel=\"stylesheet\" type=\"text/css\" media=\"screen\">")
	}