function jsontoarray(mjson)

{
var arr = [];
var i = 0;
for(var x in mjson.data){

        arr[i] = new Array();

        arr[i][0] = parseInt(String(x), 10); //String(x);
        arr[i][1] = parseInt(String(mjson.data[x]), 10);

        i = i+1;

    }

    arr.sort(function(x, y){
//alert(x[0]);
        //alert(y);
      //return x[0].localeCompare(y[0]); //字符串比较大小
      return x[0]>y[0]; //整形比较大小
    });
//var newarr[];
    for (i=0;i<arr.length;i++)

        arr[i][0] = arr[i][0]+mjson.xunit;
return arr;

}

function jsontoarrays(mjson)

{
var arr = [];
var i = 0;
for(var x in mjson.data){

        arr[i] = new Array();

        arr[i][0] = String(x);

        arr[i][1] = parseInt(String(mjson.data[x]), 10);

        i = i+1;

    }

    arr.sort(function(x, y){
return x[0].localeCompare(y[0]); //字符串比较大小
    });
for (i=0;i<arr.length;i++)

        arr[i][0] = arr[i][0]+mjson.xunit;
return arr;

}

function isEmpty(obj)

{
for (var name in obj)

    {
return false;

    }
return true;

}

function getURLParam(h,e){var g="";var f=e.toLowerCase();if(f.indexOf("?")>-1){var d=f.substr(f.indexOf("?")+1).toLowerCase();var a=d.split("&");for(var c=0;c<a.length;c++){if(a[c].indexOf(h.toLowerCase()+"=")==0){var b=a[c].split("=");g=b[1];break;}}}return g;}
//wd = getURLParam('wd', window.location.href);

function ajaxjson(mMethod, mUrl, mCallback, mData)

{
//声明对象实例
    var xmlhttp = false;

    function getHTTPRequestObject()

    {
try
        {

            xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

        }
catch(e)

        {
try
            {

                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

            }
catch(E)

            {

                xmlhttp = false;

            }

        }
if(!xmlhttp && typeof XMLHttpRequest!= 'undefined')

        {

            xmlhttp = new XMLHttpRequest();

        }

    }
//回调处理
    function callback()

    {
if(xmlhttp.readyState == 4)

            {
if(xmlhttp.status == 200)

                {
//alert(xmlhttp.responseText);
                    mCallback(JSON.parse(xmlhttp.responseText));

                }

            }

    }
//产生一个XMLHttpRequest对象实例
    getHTTPRequestObject();
// retrieve the JSON text from the local file.
    var timestamp = (new Date()).valueOf();
if (mUrl.indexOf('?')!=-1)

        mUrl = mUrl+"&t="+ timestamp;
else
        mUrl = mUrl+"?t="+ timestamp;

    xmlhttp.open(mMethod, mUrl, false);

    xmlhttp.onreadystatechange = callback;
if (mMethod == "GET")

        xmlhttp.send(null);
if (mMethod == "POST")

    {

        xmlhttp.setRequestHeader("Content-Type", "application/json;charset=UTF-8");

        xmlhttp.send(JSON.stringify(mData));

    }

}