// funcion que devuelve si el navegador utilizado es Netscape o no
//BrowserCheck
function verNav() {
var nav
var ver
var version
var b = navigator.appName
	if (b=="Netscape") 
		nav = "NS"
	else 
		if (b=="Microsoft Internet Explorer") 
			nav = "IE"
	else 
		nav = b
		
	version = navigator.appVersion
	
	if (version.indexOf('MSIE')<0)
		ver = version
	else
	{
		if (version.indexOf('MSIE 7')>=0)
			ver=7
		if (version.indexOf('MSIE 6')>=0)
			ver=6
		if (version.indexOf('MSIE 5')>=0)
			ver=5
		if (version.indexOf('MSIE 4')>=0)
			ver=4
	}
	
	return nav + ver
	
	/*
	this.v = parseInt(this.version)
	this.ns = (this.b=="NS" && this.v>=4)
	this.ns4 = (this.b=="NS" && this.v==4)
	this.ns5 = (this.b=="NS" && this.v==5)
	this.ie = (this.b=="IE" && this.v>=4)
	this.ie4 = (this.version.indexOf('MSIE 4')>0)
	this.ie5 = (this.version.indexOf('MSIE 5')>0)
	this.min = (this.ns||this.ie)
	*/
}

function verNavPlataforma() {
var arr
var plat
var nav
var ver
var version
var b = navigator.appName
	if (b=="Netscape") 
		nav = "NS"
	else 
		if (b=="Microsoft Internet Explorer") 
			nav = "IE"
	else 
		nav = b
		
	version = navigator.appVersion
	arr=version.split(";")
	//alert("-"+arr[2]+" "+" Macintosh")
	if (arr[2]==" Macintosh")
		plat = "MAC"
	else
		plat = "PCW"
		
	if (version.indexOf('MSIE')<0)
		ver = version
	else
	{
		if (version.indexOf('MSIE 5')>=0)
			ver=5
		if (version.indexOf('MSIE 4')>=0)
			ver=4
	}
	
	return nav + plat + ver
	
}


function esNestcapeJS()
{
var navegador
	
	navegador = navigator.appName
	
	if (navegador=="Microsoft Internet Explorer")
		return false
	else //(navegador=="Netscape")
		return true
	
}