function clientSniffer()
{
   var agent = navigator.appName
   this.isIE = function()
   {
      return (agent == "Microsoft Internet Explorer" && document.all)
   }
   this.isNS = function() { return (agent == "Netscape") }
   this.getVersion = function() 
   {
      if (this.isNS()) return parseInt(navigator.appVersion)
      if (this.isIE())
      {
		var vIdx = navigator.appVersion.indexOf("MSIE ") + ("MSIE ").length
		return parseInt(navigator.appVersion.substring(vIdx, vIdx+3))
      }
      return 0
   }
   this.isDOM = function()
   {
      return document.getElementById ? true : false
   }
}