function Env(){
	nav = navigator
	this.os = (nav.platform.indexOf('Win')!=-1) ? 'Win' : 'Mac'
	this.br = (nav.appName.indexOf('Microsoft Internet Explorer')!=-1) ? 'IE' : 'NS'
	this.vn = (this.br == "IE")? parseFloat(nav.appVersion.substr((nav.appVersion.indexOf("MSIE")+5),4)): parseFloat(nav.appVersion.substr(0,4))
	this.full = (this.os+" "+this.br+" "+this.vn)
}
Env = new Env()