///////////////////SNIFFER BEGINS HERE//////////////////////////////

var n = navigator;
var ua = ' ' + n.userAgent.toLowerCase();
var pl = n.platform.toLowerCase(); // not supported in NS3.0
var an = n.appName.toLowerCase();

// browser version
var version = n.appVersion;

var is_nn = ua.indexOf('mozilla') > 0;

// 'compatible' versions of "mozilla" aren't navigator
if(ua.indexOf('compatible') > 0) {
	is_nn = false;
}
var is_ie = ua.indexOf('msie') > 0;


// platform
var is_mac = ua.indexOf('mac') > 0;

var is_win = ua.indexOf('win') > 0;

var is_unix = ua.indexOf("x11") > 0;
	
	
/* This is a basic sniffer */

ua=navigator.userAgent;
l='<link rel=\"stylesheet\" type=\"text/css\" href=\"stylesheets/';
c='.css\" />';
    

  if(is_ie)    
  {
    if (ua.indexOf('IE 5')!=-1)document.write(l+'styles_explorer'+c);
    else if(ua.indexOf('IE 5.5')!=-1)document.write(l+'styles_explorer'+c);
    else if(ua.indexOf('IE 6')!=-1)document.write(l+'styles_explorer'+c);
    else if(ua.indexOf('IE 7')!=-1)document.write(l+'styles_explorer'+c);
    else if(ua.indexOf('IE 8')!=-1)document.write(l+'styles_explorer'+c);
    else
	  {
	   alert('Stylesheets are not supported on this browser version.  Please upgrade to 5.0 or above.')
	  }
  }
  else if (is_nn) 
  {
  if (ua.indexOf("/4")!=-1)document.write(l+'styles_netscape4'+c);
  else if(ua.indexOf("/5")!=-1)document.write(l+'styles_netscape4'+c);
  else if(ua.indexOf("/6")!=-1)document.write(l+'styles_netscape4'+c);
  else
	  {
	   alert('Stylesheets are not supported on this browser version.  Please upgrade to 4.0 or above.')
	  }
  }
  else
  {
  alert('Please use Netscape or IE')
  }