//Chequeo de navegador compatible con IE 6+ y NS 6+
function chequeoNavegador() {
	this.ver = navigator.appVersion 
	this.useragent=navigator.userAgent;
	this.dom = document.getElementById? 1:0 
	
	this.IE = (this.ver.indexOf("MSIE")>-1 && this.dom)? 1:0; 
	this.NS = (this.dom && parseInt(this.ver) >= 5)? 1:0;
	this.OPERA = (window.opera)? 1:0;
	this.FIREFOX = (this.dom &&  this.useragent.indexOf("Firefox")>-1)? 1:0;
	this.SAFARI = (this.ver.indexOf("Safari")!=-1)?1:0;
	this.SAFARI3 = (this.SAFARI && this.ver.indexOf("Version/3")!=-1)? 1:0;
	this.MAC = (this.useragent.indexOf('Mac') != -1)? 1:0; // S.Operativo MAC
	this.bw=(this.MAC || this.IE || this.NS || this.OPERA || this.FIREFOX ||this.SAFARI) 
	
	return this 
}