var httpR;
try {
	httpR = new XMLHttpRequest();
}
catch (error) {
	try {
		httpR = new ActiveXObject('Microsoft.XMLHTTP');
	}
	catch (error) {
		httpR = false;
	}
}
function estadosPais() {
	var q='estados.php?id=';
	var p=document.formaContrate['pais'].value;

	q+=p;
	httpR.open('get', q);
	httpR.onreadystatechange = httpR_actualizar;
	httpR.send(null);
}
function httpR_actualizar() {
    if(httpR.readyState==4) {
        var resp = httpR.responseText;
        var campo;
        if(resp.indexOf('|') != -1) {
            campo = resp.split('|');
			if(campo[0]=='0') document.getElementById('cestado').innerHTML = 
				'<input name="estado" size="50" maxlength="64" type="text" value="" />';
            else document.getElementById('cestado').innerHTML = campo[1];
        }
    }
}