// Copyright 2008 Google Inc. All Rights Reserved.
var fileLocation = "http://www.gapminder.org/communityproxy";
var collectionKey = "pk7kRzzfckbzz4AmH_e3DNA";
var chartTitle = "Gapminder World";
var titleLink = "http://www.gapminder.org";
var skinColor = "31BBFF";
var defaultChart = "VALUE!";
var bubbleswf = fileLocation + "/trendalyzer.swf";
var playOnLoadEnabled = false;
  
/** 
 * Called initially by movie
 */
function getCurrentHash(){
  return escape(window.location.href);
}

/**
 * Updates the anchor tag with information about the current
 * chart state. Used to support bookmarking chart state.
 * This function is called from flash.
 */
function updateUrl(newUrl){
  if (newUrl.length > 1 ) {
    location.hash=newUrl;
  }
}

/**
 * Returns true if the browser url does not yet 
 * contain a hash string.
 */
function noChartSpecifiedInUrl(){
  return location.hash.length == 0;
}

/**
 * Adds the default has defined in the datacollection sheet
 * to the browser's url.
 */
function setDefaultChart(){
  if (defaultChart.length > 0) location.hash = defaultChart;
}

/** 
 * Loads the bubble chart and places it in a div called 
 * bubblePanel. This id MUST be present in the embedding 
 * page to work. 
 */
function loadBubbleGraph(){
   if (noChartSpecifiedInUrl()) setDefaultChart();
   document.title=chartTitle;
  chart = new SWFObject(bubbleswf, "uid", "100%", "100%", "7", "#FFFFFF", false,"high", null, "noflash.html");
  chart.setProxy(null, 'javascript/swfobject_js_gateway.swf');
  chart.addVariable('href', escape(window.location.href));
  chart.addVariable('skinColor', '0x'+skinColor);
  chart.addVariable('chartTitle', chartTitle);
  chart.addVariable('linkToChartUrl', window.location);
  chart.addVariable('chartLink', titleLink);
  chart.addParam("scale", "default");
  chart.addVariable("playOnLoad", playOnLoadEnabled);
  chart.addVariable("urlPrefix", fileLocation + "/");
  chart.addVariable("collectionKey", collectionKey);
  chart.write("bubblePanel");
}