if (navigator.platform.indexOf('Mac') > -1) {
    //mac
    if (navigator.appName.indexOf('Microsoft') > -1) {
      //explorer
      bp="iemac"
      document.write('<link href="http://www.enterasys.com/styles/2003/default-sizes.css" rel="styleSheet" type="text/css" />');
    } else {
      //netscape
      
      if(document.getElementById){
      //Mozilla Mac
     
      if(navigator.userAgent.substr(73,7)=="Chimera"){
       bp="chimmac"
       document.write('<link href="http://www.enterasys.com/styles/2003/netscape.css" rel="styleSheet" type="text/css" />');
      }else{
       bp="mozmac"
      document.write('<link href="http://www.enterasys.com/styles/2003/default-sizes.css" rel="styleSheet" type="text/css" />');
      }
       
      }else{
      //Netscape pre 6.0
      bp="nsmac"
       document.write('<link href="http://www.enterasys.com/styles/2003/netscape.css" rel="styleSheet" type="text/css" />');
      }
     
    }
  } else {
  if (navigator.platform.indexOf('Win') > -1){
 //windows
	if (navigator.appName.indexOf('Microsoft') > -1) {
      //explorer
      
      bp="iewin"
      document.write('<link href="http://www.enterasys.com/styles/2003/default-sizes.css" rel="styleSheet" type="text/css" />');
  
    } else {
      //netscape
      bp="nswin"
      document.write('<link href="http://www.enterasys.com/styles/2003/default-sizes.css" rel="styleSheet" type="text/css" />');
    }
} else {
      //unix
      bp="nsunix"
      document.write('<link href="/styles/2003/linux.css" rel="styleSheet" type="text/css" />');
    }
  }