function BrowserDetect(){
		this.IE = (document.all)?true:false
		this.NN4 = (navigator.appName.indexOf('Netscape') >= 0 && navigator.appVersion.charAt(0)=="4")?true:false
		this.NN6 = (document.getElementById && !this.IE)?true:false
		this.MAC = (navigator.userAgent.toLowerCase().indexOf("mac")!=-1)?true:false
	}
	var thisBrowser = new BrowserDetect()