var Doc, Style, Htm, Images;
function cNavegador()
{
	this.sNombre = navigator.appName;
	if ( this.sNombre == "Netscape" ) this.sNombreAbrev = "ns"; 
	else if ( this.sNombre == "Microsoft Internet Explorer" ) this.sNombreAbrev = "ie";
	else if ( this.sNombre == "Opera" ) this.sNombreAbrev = "op";
	else this.sNombreAbrev = this.sNombre;
	this.nVersion = navigator.appVersion;
	this.sAgent = navigator.userAgent;
	this.sPlataforma = navigator.platform;
	this.bEsDOM = document.getElementById ? true : false;
	this.bEsOP = ( this.sNombreAbrev == "op" );
	this.bEsOP5 = ( this.bEsOP && this.sAgent.indexOf ("Opera/5") >= 0 );
	this.bEsOP6 = ( this.bEsOP && this.sAgent.indexOf ("Opera/6") >= 0 );
	this.bEsNS = ( this.sNombreAbrev == "ns" );
	this.bEsNS4 = ( this.bEsNS && this.sAgent.indexOf ("Netscape/4") >= 0 )
	this.bEsNS5 = ( this.bEsNS && this.sAgent.indexOf ("Netscape/5") >= 0 );
	this.bEsNS6 = ( this.bEsNS && this.sAgent.indexOf ("Netscape/6") >= 0 );
	this.bEsNS7 = ( this.bEsNS && this.sAgent.indexOf ("Netscape/7") >= 0 );
	this.bEsIE = ( this.sNombreAbrev == "ie" );
	this.bEsIE4 = ( this.bEsIE && this.sAgent.indexOf ("MSIE 4") >= 0 );
	this.bEsIE5 = ( this.bEsIE && this.sAgent.indexOf ("MSIE 5") >= 0 );
	this.bEsIE6 = ( this.bEsIE && this.sAgent.indexOf ("MSIE 6") >= 0 );
	if (this.bEsNS4) {
		this.errorHandler = cNavegador_errorHandler;
		Doc = "document.";
		Style = "";
		Htm = ".document";
		Images = "images."
		window.onerror = this.errorHandler;
	} else if (this.bEsDOM) {
		Doc = "document.getElementById('";
		Style = "').style";
		Htm = "";
		Images = "images."		
	} else {
		Doc = "document.all.";
		Style = ".style";
		Htm = "";
		Images = "";
	}	
	this.bOK = ( this.bEsIE4 || this.bEsIE5 || this.bEsIE6 || this.bEsNS4 || this.bEsNS5 || this.bEsNS6 || this.bEsNS7 || this.bEsOP5 || this.bEsOP6 );
}
function cNavegador_errorHandler (sParError, sParFichero, nParLinea)
{
	alert("Error de Javascript en esta página.\n" + 
		  "- Fichero: " + sParFichero + "\n" + 
		  "- Línea: " + nParLinea + "\n" + 
		  "- Error:" + sParError);
	return true;
}
var oNavegador = new cNavegador();