function CallPageMethod(pagePath,fn, paramArray, successFn, errorFn) 
{
    //Create list of parameters in the form:   
    //{"paramName1":"paramValue1","paramName2":"paramValue2"}   
     var paramList = '';
   if (paramArray.length > 0) {
        for (var i = 0; i < paramArray.length; i += 2) {
            if (paramList.length > 0) paramList += ',';
            paramList += '"' + paramArray[i] + '":"' + paramArray[i + 1] + '"';
        }
    }
    paramList = '{' + paramList + '}';
    //Call the page method
    $.ajax(
    {
        type: "POST",
        url: pagePath + "/" + fn,
        contentType: "application/json; charset=utf-8",
        data: paramList,
        dataType: "json",
        success: successFn,
        error: errorFn
    });
}


function CallPageMethodNoParams(pagePath, fn, successFn, errorFn) {


    //Create list of parameters in the form:   
    //{"paramName1":"paramValue1","paramName2":"paramValue2"}   
    var paramList = '';
    paramList = '{' + paramList + '}';
    //Call the page method
    $.ajax(
    {
        type: "POST",
        url: pagePath + "/" + fn,
        contentType: "application/json; charset=utf-8",
        data: paramList,
        dataType: "json",
        success: successFn,
        error: errorFn
    });
}