function vermarca(marca) {
	var req = generar_ajax();
	var url="/accion/vermarca.asp?idmarca="+ escape(marca);
	req.onreadystatechange= function () {
		if (req.readyState != 4) {
    		return;
  		}
  		if (req.status == 200) {
    		document.getElementById("vermarca").innerHTML=req.responseText;	    		
  		} 
  		else { alert("Error");}
		req = null;
	}
	req.open("POST", url, true);
	var encoded = "";
	encoded = "idmarca="+ escape(marca);
	req.send(encoded);
}

function vermodelo(modelo) {
	var req = generar_ajax();
	var url="/accion/vermodelo.asp?idmodelo="+ escape(modelo);
	req.onreadystatechange= function () {
		if (req.readyState != 4) {
    		return;
  		}
  		if (req.status == 200) {
    		document.getElementById("vermarca").innerHTML=req.responseText;	    		
  		} 
  		else { alert("Error");}
		req = null;
	}
	req.open("POST", url, true);
	var encoded = "";
	encoded = "idmodelo="+ escape(modelo);
	req.send(encoded);
}

function vermodelos(marca) {
	var req = generar_ajax();
	var url="/accion/vermodelos.asp?idmarca="+ escape(marca);
	req.onreadystatechange= function () {
		if (req.readyState != 4) {
    		return;
  		}
  		if (req.status == 200) {
    		document.getElementById("modelos").innerHTML=req.responseText;	    		
  		} 
  		else { alert("Error");}
		req = null;
	}
	req.open("POST", url, true);
	var encoded = "";
	encoded = "idmarca="+ escape(marca);
	req.send(encoded);
	document.getElementById("modelos").innerHTML="...";
}