//ESTA FUNCION ES PARA SABER EL TIPO DE MANEJADOR Y SUS VERSIONES
//PARA SI PODER MANEJAR LAS INCOPATIBILIDADES ENTRE ESTOS

function Browser() 
{
	var ua, s, i;

	this.isIE    = false;  // Internet Explorer
	this.isOP    = false;  // Opera
	this.isNS    = false;  // Netscape
	this.version = null;
	ua = navigator.userAgent;
	
	s = "Opera";
	if ((i = ua.indexOf(s)) >= 0) 
	{
		this.isOP = true;
    	this.version = parseFloat(ua.substr(i + s.length));
    	return;
  	}

  	s = "Netscape6/";
  	if ((i = ua.indexOf(s)) >= 0) 
  	{
    	this.isNS = true;
    	this.version = parseFloat(ua.substr(i + s.length));
    	return;
  	}

	// Treat any other "Gecko" browser as Netscape 6.1.
	s = "Gecko";
  	if ((i = ua.indexOf(s)) >= 0) 
  	{
    	this.isNS = true;
    	this.version = 6.1;
    	return;
  	}

	s = "MSIE";
  	if ((i = ua.indexOf(s))) 
  	{
    	this.isIE = true;
    	this.version = parseFloat(ua.substr(i + s.length));
    	return;
  	}
}

var browser = new Browser();