public string ViewUserRatings(int productId, string callback)
{
string param = string.Empty;
if (productId != 0)
param = "?productId=" + productId.ToString();
else
this.ShowErrors(string.Format("ID do produto requerido na função <b>{0}</b>.", Services.viewUserRatings));
param += (!string.IsNullOrEmpty(callback)) ? "&callback=" + callback : string.Empty;
param += (!string.IsNullOrEmpty(this.sourceId)) ? "&sourceId=" + this.sourceId : string.Empty;
param += this.isJson;
string url = string.Format("http://{0}.buscape.com/service/{1}/{2}/{3}/{4}", this.server, Services.viewUserRatings, this.applicationId, this.countryCode, param);
return GetContent(url);
}