// MPE_Sniffer version 1.0
// 11/10/2001
// For info about this script contact m.altafini@esperia.com

	function Is() {
	    var agt=navigator.userAgent.toLowerCase();
	    this.major = parseInt(navigator.appVersion);
	    this.minor = parseFloat(navigator.appVersion);
	
	    this.nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
	                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
	                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
	    this.nav2 = (this.nav && (this.major == 2));
	    this.nav3 = (this.nav && (this.major == 3));
	    this.nav4 = (this.nav && (this.major == 4));
	    this.nav4up = (this.nav && (this.major >= 4));
	    this.navonly      = (this.nav && ((agt.indexOf(";nav") != -1) ||
	                          (agt.indexOf("; nav") != -1)) );
	    this.nav6 = (this.nav && (this.major == 5));
	    this.nav6up = (this.nav && (this.major >= 5));
	    this.gecko = (agt.indexOf('gecko') != -1);
	
	    this.ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
	    this.ie3    = (this.ie && (this.major < 4));
	    this.ie4    = (this.ie && (this.major == 4) && (agt.indexOf("msie 4")!=-1) );
	    this.ie4up  = (this.ie && (this.major >= 4));
	    this.ie5    = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")!=-1) );
	    this.ie5_5  = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.5") !=-1));
	    this.ie5up  = (this.ie && !this.ie3 && !this.ie4);
	    this.ie5_5up =(this.ie && !this.ie3 && !this.ie4 && !this.ie5);
	    this.ie6    = (this.ie && (this.major == 4) && (agt.indexOf("msie 6.")!=-1) );
	    this.ie6up  = (this.ie && !this.ie3 && !this.ie4 && !this.ie5 && !this.ie5_5);
	    this.ie7    = (this.ie && (this.major == 4) && (agt.indexOf("msie 7.")!=-1));
	    
	    this.opera = (agt.indexOf("opera") != -1);
	    this.opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
	    this.opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
	    this.opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
	    this.opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
	    this.opera5up = (this.opera && !this.opera2 && !this.opera3 && !this.opera4);
	    
	    this.win = navigator.appVersion.toLowerCase().indexOf("win")!=-1;
	    this.mac = navigator.appVersion.toLowerCase().indexOf("mac")!=-1;
	    
	}
	
	// La funzione seguente verifica se il browser rispetta le specifiche standard di Esperia: 
	function MPE_DefaultBrowser() {
		if (is.nav6up || is.ie6up || is.opera5up || is.gecko){
			return true;
		}
		return false;
	}

var is = new Is();