function LeClient() {
  var agentEnMinuscules = navigator.userAgent.toLowerCase();
  this.version = parseInt(navigator.appVersion);

  this.netscape = (navigator.appName == 'Netscape');
  this.ns2 = (this.netscape && (this.version == 2));
  this.ns3 = (this.netscape && (this.version == 3));
  this.ns4 = (this.netscape && (this.version >= 4));

  this.msie = (agentEnMinuscules.indexOf("msie") != -1);
  this.ie3 = (this.msie && (this.version == 2));
  this.ie4 = (this.msie && (this.version == 4) && (agentEnMinuscules.indexOf("5.") == -1));
  this.ie5 = (this.msie && (this.version == 4) && (agentEnMinuscules.indexOf("5.") != -1));
  
  this.win = (agentEnMinuscules.indexOf("win")!=-1);
  this.unix = (agentEnMinuscules.indexOf("x11")!=-1);
  this.mac = (agentEnMinuscules.indexOf("mac")!=-1);
  this.amiga = (agentEnMinuscules.indexOf("amiga") != -1);
  this.trucmuch = (agentEnMinuscules.indexOf("trucmuch") != -1);

}

var leClient = new LeClient();