//Riconoscimento del Browser




function Is() {
	var agent = navigator.userAgent.toLowerCase();
	this.major = parseInt(navigator.appVersion);
	this.minor = parseFloat(navigator.appVersion);
	this.dom=document.getElementById?1:0;
	this.os=navigator.platform.toLowerCase();
	
	//Os
	this.win=(this.os.indexOf("win")? false:true);
	this.mac=(this.os.indexOf("mac")? false:true);
	    
	//Netscape
	this.ns  = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
	this.ns2 = (this.ns && (this.major == 2));
	this.ns3 = (this.ns && (this.major == 3));
	this.ns4b = (this.ns && (this.major == 4) && (this.minor <= 4.03));
	this.ns45 = (this.ns && (this.minor >= 4.5) && (this.minor <= 4.51));
	this.ns4 = (this.ns && (this.major >= 4) && (this.minor < 5));
	this.ns5 = (this.dom = 1 && (this.major >= 5));
	  
	//Explorer
	this.ie   = (agent.indexOf("msie") != -1);
	this.ie3  = (this.ie && (this.major == 2));
	this.ie4  = (this.ie && (this.major >= 4));
	this.ie5 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0") != -1));    
	this.ie55 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.5") != -1));
	
	//Aol
	this.aol = (agent.indexOf("aol") != -1);
	this.aol3 = (this.aol && this.ie3); 
	this.aol4 = (this.aol && this.ie4); 
	this.aol5 = (this.aol && this.ie5);
	
	//Opera
	this.op = (agent.indexOf("opera") != -1);
	this.op3 = (agent.indexOf("opera") != -1 && (this.major < 4));
	this.op4 = (agent.indexOf("opera") != -1 && (this.major >= 4));

}

var is = new Is()