var sb;
sb=0;
if ( ! document.layers && ! document.all )
{
  sb=1;
}

//determines which stylesheet to write based on 
//browser/platform combination.  Also sets global
//variable bp for browser/platform testing elsewhere.
if (!sb) {
  if (navigator.platform.indexOf('Mac') > -1) {
    //mac
    if (navigator.appName.indexOf('Microsoft') > -1) {
      //explorer
      bp="iemac"
      document.write('<LINK HREF="../library/style_ie.css" REL="styleSheet" TYPE="text/css">');
  
    } else {
      //netscape
      bp="nsmac"
      document.write('<LINK HREF="../library/style_ns.css" REL="styleSheet" TYPE="text/css">');
  
    }
  } else {
    //windows or unix
    if (navigator.appName.indexOf('Microsoft') > -1) {
      //explorer
      bp="iewin"
      document.write('<LINK HREF="../library/style_ie.css" REL="styleSheet" TYPE="text/css">');
  
    } else {
      //netscape
      bp="nswin"
      document.write('<LINK HREF="../library/style_ns.css" REL="styleSheet" TYPE="text/css">');
  }
    }
  }