if(document.getElementById){
	cpA="document.getElementById(";
	cpB=").style";
	cpC=")";
}
else{
	if(navigator.appName == "Microsoft Internet Explorer"){
		cpA="document.all[";
		cpB="].style";
		cpC="]";
	}
	else{
		cpA="document.layers[";
		cpB="]";
		cpC="]";
	}
}

function parametro(argumento){
	var txt_titulo="";
	var b = document.location;
	var a = new String(b);
	var srch = a.substr(a.indexOf('?')+1);
	partOf = srch.split("&");
	for (var i=0; i<partOf.length; i++) {
		var tmp = partOf[i].split("=");
		if (tmp[0] == argumento) txt_titulo=unescape(tmp[1]);
	}
	return txt_titulo;
}

function contenido(div_destino,div_origen){
	div_A= eval(cpA + "'" + div_destino + "'" + cpC);
	div_B= eval(cpA + "'" + div_origen + "'" + cpC);
	if (div_A && div_B) { 
		div_A.innerHTML = div_B.innerHTML;
	}
}