function CallPageMethod(functionName, data, successFunction, errorFunction)
{
    
    var url = document.location.href + "/" + functionName;

    CallWebMethod(url, data, successFunction, errorFunction);
}

function CallWebMethod(functionName, data, successFunction, errorFunction)
{
    $.ajax(
    {
        type: "POST",
        url: functionName,
        data: data,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: successFunction,
        error: errorFunction
    });
}