var x11 = navigator.appVersion.indexOf('X11');

if((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )){
   
   if((navigator.appVersion.indexOf("Macintosh"))!= -1){
      
      document.write('<link rel="stylesheet" href="/css/bpcr1.css" type="text/css"/>')
   }
   else{
   
      document.write('<link rel="stylesheet" href="/css/bpcie1.css" type="text/css"/>')
      
   }
   
}
else if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4)){

   if((navigator.appVersion.indexOf("Macintosh"))!= -1){
   
      document.write('<link rel="stylesheet" href="/css/bpcr1.css" type="text/css"/>')
      
   }
   else if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 5)){
   
      document.write('<link rel="stylesheet" href="/css/bpcr1.css" type="text/css"/>')
      
   }
   else if (x11 != -1){
   
      document.write('<link rel="stylesheet" href="/css/bpcr1.css" type="text/css"/>')
      
   }
   else{
      
      document.write('<link rel="stylesheet" href="/css/bpcns1.css" type="text/css"/>')
   
   }

}
else{

   document.write('<link rel="stylesheet" href="/css/bpcr1.css" type="text/css"/>')
   
}