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var res = $fh.sec( parameters );  //res will contain an 'error' key if it's failed

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$fh.sec( parameters, function(res){
  //success callback function. responses are passed into res object
}, function(error){
  //failure callback function. error contains the error message
});

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<p> Current Time : </p>
<div id="current_time_response"> </div>
<button id='current_time'> Refresh time </button>  

<script>
  $(document).ready(function(){
   $('#current_time').click(readTime);
  });

  function readTime() {

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  // Add some test placemarks so cache can be invalidated if required
  //mashup.push({type: 'test', title: 'Test 1', lat: 57.5, lon: -7.5});
  //mashup.push({type: 'test', title: 'Test 2', lat: 57, lon: -7});
  //mashup.push({type: 'test', title: 'Test 3', lat: 57.3, lon: -7.3});

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var CACHE_TIME = 10

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function readCache() {
  var ret = $fh.cache({
    "act": "load",
    "key": "_cache"
  });
  return ret.val;
}

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function doCache(hash, data) {
  var obj = {
    "hash": hash,
    "data": data,
    "cached": true
  };
  $fh.cache({
    "act": "save",
    "key": "_cache",
    "val": obj,

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function getMashup() {
 
  var response = {};
 
  // Check the cloud cache to see if we have data
  var cached = readCache();
 
  // No cahced data in cloud
  if( ""=== cached ) {
 

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// Call the server side function to get the mashup data
  $fh.act({
    act: 'getMashup',
    req: {
      hash: hash,
      timestamp: new Date().getTime()
    }
  }, function (res) {
    var mashup = res;
 

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function doMashUp() {
  var mashup = [];
 
  // Add some test placemarks so cache can be invalidated if required
  //mashup.push({type: 'test', title: 'Test 1', lat: 57.5, lon: -7.5});
  //mashup.push({type: 'test', title: 'Test 2', lat: 57, lon: -7});
  //mashup.push({type: 'test', title: 'Test 3', lat: 57.3, lon: -7.3});
 
  // Get placemarks from flickr  
  var flickr = getFlickrData();