/*!
 * 東京電力使用状況メーター
 * Author: Yuji Tomonari
 * Date: Sun Apr. 10 18:11:00 2011
 */

function stdn_graph_insert(json){
  var usage = json["ElectricPowerUsage"]["Usage"]["$"];;
  var capacity = json["ElectricPowerUsage"]["Capacity"]["$"];
  var hour = json["ElectricPowerUsage"]["Hour"];
  var rate = Math.floor(usage / capacity * 100);

  var rate_color;
  var base_color = 'dcdcdc';

  if (rate <= 80) rate_color = '90ee90';
  else if (rate <= 90) rate_color = 'ffd700';
  else rate_color = 'ff6347';

  document.getElementById('stdn').src
    = 'http://chart.apis.google.com/chart?chxt=x&chbh=a,0,0&chs=200x48'
    + '&cht=bhs&chco=' + rate_color + ',' + base_color + '&chd=t:' + rate  + '|' + (100 - rate)
    + '&chtt=%E6%9D%B1%E4%BA%AC%E9%9B%BB%E5%8A%9B%E4%BD%BF%E7%94%A8%E7%8A%B6%E6%B3%81'
    + hour + '%E6%99%82%E5%8F%B0' + ' (%E4%BD%BF%E7%94%A8%E7%8E%87 ' + rate + '%) ' + '&chts=000000,10.5';
};

function djson() {
  var script = document.createElement('script');
  var appid = 'p84l__Gxg64ez46qOvx8MmYrY1iTg_fA0f.2rblBhj0bbnizHtXAAVYjHNm6cc0RNC8f';
  var apiurl = 'http://setsuden.yahooapis.jp/v1/Setsuden/latestPowerUsage'
  + '?appid=' + appid + '&output=json&callback=stdn_graph_insert';
  script.id = apiurl;
  script.charset = 'UTF-8';
  script.src = script.id;
  document.lastChild.appendChild(script);
};