onlinetichu-counter/onlinetichu-counter.js

// ==UserScript==
// @name         onlinetichu.com card counter
// @version      1.3.5
// @description  automatically count cards at onlinetichu.com
// @match        *://*.onlinetichu.com/Site/Game/Table/*
// @author       Maximilian Keßler
// @namespace    https://gitlab.com/kesslermaximilian/onlinetichu-counter
// @license      MIT
// ==/UserScript==

// disable auto fold functionality completely
function injectCounter() {
  if (ot.AutoFold) {
    ot.$autoFold.click()
    ot.$autoFold.hide()
  }

  var myStyles = `
    #playedHigh {
      position: absolute;
      top: 45px;
      left: 5px;
      width: 935px;
      height: 120px;
    }

    #playedLow {
      position: absolute;
      top: 170px;
      left: 5px;
      width: 935px;
      height: 120px;
    }

    #counterField {
      position: absolute;
      width: 945px;
      height: 300px;
      top: 635px;
      border: 1px solid black;
      box-shadow: 1px 1px 1px #555;
      background: #88CC00;
    }

    #controlBar {
      position: absolute;
      min-height: 32px;
      width: 925px;
      top: 5px;
      left: 5px;
      border-radius: 20px;
      background: #000000;
    }

    #controlButtonsLeft {
      position: absolute;
      top: 4px;
      left: 15px;
    }

    #controlButtonsRight {
      position: absolute;
      top: 4px;
      right: 15px;
    }

    .playedCardsLayout {
      position: absolute;
      height: 125px;
    }

    .playedCardsLayout .card {
          width: 80px;
          height: 120px;
          border-radius: 5px;
          float: left;
          margin-left: -50px;
          text-align: left;
          box-shadow: 2px 2px 5px #555;
          border: 1px solid #000000;
      }

    .playedCardsLayout .card:hover {
            z-index: 1400;
        }
  `

  var styleSheet = document.createElement("style")
  styleSheet.innerText = myStyles;
  console.log(styleSheet);
  document.head.appendChild(styleSheet);

  var controlBar = document.createElement('div');
  controlBar.id = 'controlBar';

  var controlButtonsLeft = document.createElement('div');
  controlButtonsLeft.className = 'btn-group';
  controlButtonsLeft.id = 'controlButtonsLeft';

  var controlButtonsRight = document.createElement('div');
  controlButtonsRight.className = 'btn-group';
  controlButtonsRight.id = 'controlButtonsRight';

  var davidProtectionButton = document.createElement('button');
  davidProtectionButton.className = "btn btn-success btn-xs";
  davidProtectionButton.id = "davidProtection";
  davidProtectionButton.type = "button";
  davidProtectionButton.innerHTML = 'David protection: <span id="davidProtectionValue" data-on="On" data-off="Off">Off</span>';

  var autoWishButton = document.createElement('button');
  autoWishButton.className = "btn btn-info btn-xs";
  autoWishButton.id = "autoWish";
  autoWishButton.type = "button";
  autoWishButton.innerHTML = 'Auto Wish: <span id="autoWishValue" data-on="On" data-off="Off">Off</span>';

  var showRemainingButton = document.createElement('button');
  showRemainingButton.className = "btn btn-info btn-xs";
  showRemainingButton.id = "showRemaining";
  showRemainingButton.type = "button";
  showRemainingButton.innerHTML = 'Show: <span id="showRemainingValue" data-on="Remaining" data-off="Played">Remaining</span>';

  var showCountedCardsButton = document.createElement('button');
  showCountedCardsButton.className = "btn btn-success btn-xs";
  showCountedCardsButton.id = "showCountedCards";
  showCountedCardsButton.type = "button";
  showCountedCardsButton.innerHTML = 'Show cards: <span id="showCountedCardsValue" data-on="Yes" data-off="No">No</span>';

  controlButtonsRight.appendChild(showRemainingButton);
  controlButtonsRight.appendChild(showCountedCardsButton);
  controlButtonsLeft.appendChild(davidProtectionButton);
  controlButtonsLeft.appendChild(autoWishButton);

  controlBar.appendChild(controlButtonsLeft);
  controlBar.appendChild(controlButtonsRight);

  var counterField = document.createElement("div");
  counterField.id = 'counterField';
  counterField.appendChild(controlBar);

  // add an extra field where we will put down the played cards
  var cardsField = document.createElement('div');
  cardsField.id = 'cardsField';
  cardsField.style.marginLeft = '25px';

  var playedHigh = document.createElement('div');
  playedHigh.id = 'playedHigh';
  playedHigh.style.marginLeft = '25px';
  playedHigh.className = 'row';
  playedHigh.hidden = true;

  var playedLow = document.createElement('div');
  playedLow.id = 'playedLow';
  playedLow.style.marginLeft = '25px';
  playedLow.className = 'row';
  playedLow.hidden = true;

  counterField.appendChild(playedHigh);
  counterField.appendChild(playedLow);

  tableIG = document.getElementById('gameField').parentNode;
  tableIG.appendChild(counterField);

  var createCardPlace = function(value, shift, node) {
    var playedCards = document.createElement('ul');
    playedCards.id = 'playedCards' + value;
    // playedCards.className = 'layoutPlayedCards list-unstyled col-lg-2';
  //  playedCards.className = 'playedCardsLayout list-unstyled';
    playedCards.className = 'playedCardsLayout list-unstyled';
    playedCards.style.width = '160px';
    playedCards.style.marginLeft = '25px';
    playedCards.style.left = shift*127 + 'px';

    node.appendChild(playedCards);
  }

  createCardPlace(1, 0, document.getElementById('playedHigh'));
  for(let i = 14; i > 8; i--) {
    createCardPlace(i, 14 - i + 1, document.getElementById('playedHigh'));
  }

  for(let i = 8; i > 1; i--) {
    createCardPlace(i, 8 - i, document.getElementById('playedLow'));
  }


  var smartFoldButton = document.createElement('button');
  smartFoldButton.className = "btn btn-danger btn-xs";
  smartFoldButton.id = "smartFold";
  smartFoldButton.type = "button";
  smartFoldButton.innerHTML = 'Smart fold: <span id="smartFoldValue" data-on="On" data-off="Off">On</span>';

  var showCardCounterButton = document.createElement('button');
  showCardCounterButton.className = "btn btn-primary btn-xs";
  showCardCounterButton.id = "showCardCounter";
  showCardCounterButton.type = "button";
  showCardCounterButton.innerHTML = 'Card Counter: <span id="showCardCounterValue" data-on="On" data-off="Off">No</span>';

  buttons = document.getElementById('statusButtons');
  buttons.insertBefore(showCardCounterButton, document.getElementById('autoFold'));
  buttons.insertBefore(smartFoldButton, document.getElementById('autoFold'));

  var patchPlayerStats = function(direction) {
    playerLevel = document.getElementById(direction + 'PlayerLevel');
    playerGoldTourns = document.getElementById(direction + 'PlayerGoldTourns');
    playerTichu = document.getElementById(direction + 'PlayerTichu');
    playerDiv = playerLevel.parentElement;

    playerDiv.removeChild(playerLevel);
    playerDiv.removeChild(playerGoldTourns);

    playerMyLevel = document.createElement('div');
    playerMyLevel.id = direction + 'PlayerMyLevel';
    playerMyLevel.innerText = '';

    playerTichuCoefficient = document.createElement('div');
    playerTichuCoefficient.id = direction + 'PlayerTichuCoefficient';
    playerTichuCoefficient.innerText = '';

    playerDiv.insertBefore(playerMyLevel, playerTichu);
    playerDiv.insertBefore(playerTichuCoefficient, playerTichu);
  }

  patchPlayerStats('south');
  patchPlayerStats('north');
  patchPlayerStats('east');
  patchPlayerStats('west');

  // playedCards.
  // ot.$gameField.insertAfter(playedCards, ot.$gameField.lastChild);

  // set up counting of played cards
  var OnlineTichuCounter = {
    $playedCards: {},
    $smartFold: $('#smartFold'),
    $smartFoldValue: $('#smartFoldValue'),
    $showCardCounter: $('#showCardCounter'),
    $showCardCounterValue: $('#showCardCounterValue'),
    $showRemaining: $('#showRemaining'),
    $showRemainingValue: $('#showRemainingValue'),
    $showCountedCards: $('#showCountedCards'),
    $showCountedCardsValue: $('#showCountedCardsValue'),
    $davidProtection: $('#davidProtection'),
    $autoWishValue: $('#autoWishValue'),
    $autoWish: $('#autoWish'),
    $davidProtectionValue: $('#davidProtectionValue'),
    $playedHigh: $('#playedHigh'),
    $playedLow: $('#playedLow'),
    $counterField: $('#counterField'),
    $playerMyLevel: {
      'east': $('#eastPlayerMyLevel'),
      'north': $('#northPlayerMyLevel'),
      'west': $('#westPlayerMyLevel'),
      'south': $('#southPlayerMyLevel'),
    },
    $playerTichuCoefficient: {
      'east': $('#eastPlayerTichuCoefficient'),
      'north': $('#northPlayerTichuCoefficient'),
      'west': $('#westPlayerTichuCoefficient'),
      'south': $('#southPlayerTichuCoefficient'),
    },

    // dynamic game state
    allCards: {},
    playedCards: {},
    totalPlayed: [],
    exchangedTo: {},
    exchangedFrom: {},
    handCardShuffle: [],
    playerNames: {},

    // config values, triggered with buttons
    smartFold: true,
    showCardCounter: false,
    showRemaining: true,
    showCountedCards: false,
    davidProtection: false,
    autoWish: false,
    shuffleCards: true,

    // dynamic feature state
    davidProtectionTriggered: true,
    bombAfterFold: null, // to implement
    stats: {},

    util: {
      displayCardsHtmlString: function(cards) {
          htmlString = "";
          $(cards).each(function () {
            var value = this.Value;
            if (this.Shape == 7) {
              value = 0;
            }
            htmlString += '<li id="c' + this.Shape + '-' + value
                       + '" class="card c' + this.Shape + '-' + value
                       + '" data-shape="' + this.Shape + '" data-value="'
                       + value + '"></li>';
          });
          return htmlString;
      },

      populateAllCards: function() {
        for(let val = 2; val < 15; val++) {
          otc.allCards[val] = [];
          for(let shape = 0; shape < 4; shape++) {
            otc.allCards[val].push({
              Shape: shape,
              Value: val
            });
          }
        }
        otc.allCards[1] = [
          { Shape: 4, Value: 1 }, // mahjong
          { Shape: 5, Value: 0 }, // dog
          { Shape: 6, Value: 15}, // dragon
          { Shape: 7, Value: 14 } // phoenix
        ];
      },

      cardInArray: function(card, array) {
        contained = false;
        for(let i = 0; i < array.length; i++) {
          if (array[i].Shape == card.Shape && array[i].Value == card.Value) {
            contained = true;
          }
        }
        return contained;
      },

      extractInt: function(text) {
        num = /\d+(m|k)?/.exec(text)[0];
        if (num.includes('k')) {
          return 1000 * parseInt(num.split('k')[0]);
        } else if (num.includes('m')) {
          return 1000000 * parseInt(num.split('m')[0]);
        }
        return parseInt(num);
      },

      extractFloat: function(text) {
        num = /\d+(\.\d+)?/.exec(text)[0];
        return parseFloat(num);
      },

      // warning: note that this is async
      getStats: function(user) {
        $.get('https://www.onlinetichu.com/Site/Profiles/User/' + user, null, function(text){
          statsNav = $(text).find('#nav-statistics');
          wbox1 = statsNav.children()[1];

          c1 = wbox1.children[0].children[0].children[1].children;
          c2 = wbox1.children[0].children[0].children[2].children;


          var generalStats = {
            level:                      otc.util.extractInt(   c1[0].innerText),
            nextLevelIn:                otc.util.extractFloat( c1[1].innerText),
            rating:                     otc.util.extractInt(   c1[2].innerText),
            games:                      otc.util.extractFloat( c1[3].innerText),
            wins:                       otc.util.extractFloat( c1[4].innerText.split("-")[0]),
            defeats:                    otc.util.extractFloat( c1[4].innerText.split("-")[1]),
            winningPercentage:          (otc.util.extractFloat( c1[5].innerText)).toFixed(1),
            goldGames:                  otc.util.extractFloat( c1[6].innerText),
            goldWins:                   otc.util.extractFloat( c1[7].innerText.split("-")[0]),
            goldDefeats:                otc.util.extractFloat( c1[7].innerText.split("-")[1]),
            goldWinningPercentage:      otc.util.extractFloat( c1[8].innerText),
            points:                     otc.util.extractInt(   c1[9].innerText),
            rounds:                     otc.util.extractInt(   c1[10].innerText),
            oneTwo:                     otc.util.extractInt(   c1[11].innerText),
            grandTichuPercentage:       otc.util.extractFloat( c2[0].innerText),
            grandTichuCalled:           otc.util.extractInt(   c2[1].innerText),
            grandTichuSuccessful:        otc.util.extractInt(   c2[2].innerText),
            tichuPercentage:            otc.util.extractFloat( c2[3].innerText),
            tichuCalled:                otc.util.extractInt(   c2[4].innerText),
            tichuSuccessful:             otc.util.extractInt(   c2[5].innerText),
            tournaments:                otc.util.extractInt(   c2[6].innerText),
            tournamentsFirstAward:      otc.util.extractInt(   c2[7].innerText),
            tournamentsSecondAward:     otc.util.extractInt(   c2[8].innerText),
            abandonments:               otc.util.extractInt(   c2[9].innerText)
          };

          lostGrand = generalStats.grandTichuCalled - generalStats.grandTichuSuccessful;
          lostTichu = generalStats.tichuCalled - generalStats.tichuSuccessful;

          var customStats = {
            abandonmentRate:       (generalStats.abandonments / (generalStats.games + generalStats.goldGames) * 100).toFixed(1),
            grandTichuUnsuccesful: lostGrand,
            tichuUnsuccesful:      lostTichu,
            tichuCoefficient:      (( (generalStats.grandTichuSuccessful - lostGrand) * 200 + (generalStats.tichuSuccessful - lostTichu) * 100 ) / generalStats.rounds).toFixed(1),
            oneTwoCoefficient:     (100 * generalStats.oneTwo / generalStats.rounds).toFixed(1)  // note that we only use 100 here, as a One-Two is scored for both players. This way, this is better comparable to the tichuCoefficient
          }

          var userStats = {
            custom: customStats,
            general: generalStats
          }

          otc.stats[user] = userStats ;
//          console.log('Fetched stats of user ' + user);

          // update stats shown at table
          otc.action.updateDisplayStats();
        });
      }
    },

    action: {

      selectAutoWish: function() {
        if (otc.exchangedTo['east'] == null) {
          return;
        }
        val = 0;
        if (otc.exchangedTo['east'].Shape < 4 ) {
          val = otc.exchangedTo['east'].Value;
        } else if (otc.exchangedTo['east'].Shape == 5) {
          val = 14; // wish for ace by default if we gave a dog to the right
        }
        button = document.getElementById("askCard_" + val);
        button.click();
      },

      deSelectAutoWish: function() {
        button = document.getElementById("askCard_0");
        button.click();
      },

      handlePlayedCard: function(card) {
        index = 0;
        // special cards have Shapes 4,5,6,7. We group them at value 1
        if(card.Shape >= 4) {
          index = 1;
          if (card.Shape == 7) {
            // Treat phoenix as if it had value 14
            // This is important for comparisons later
            card.Value = 14;
          }
        } else {
          index = card.Value;
        }
        otc.playedCards[index].push(card);
        otc.totalPlayed.push(card);

        otc.playedCards[index].sort(function(c1, c2){
          return c2.Shape - c1.Shape;
        });
      },

      handlePlayedCards: function(cards) {
        if (cards.length === 0) {
          return;
        }
        if (!otc.util.cardInArray(cards[0], otc.totalPlayed)) {
          $(message.Table.TableCards).each(
            (index, card) => otc.action.handlePlayedCard(card)
          );
        }
      },

      reset: function() {
        for(let i = 1; i < 15; i++) {
          otc.playedCards[i] = [];
        }
        dirs = ['east', 'north', 'west'];
        for (i in dirs) {
          otc.exchangedTo[dirs[i]] = null;
          otc.exchangedFrom[dirs[i]] = null;
        }
        otc.totalPlayed = [];
        otc.handCardShuffle = [];
        otc.playerNames = {};
        otc.stats = {};
      },

      drawPlayedCards: function() {
        for(let i = 1; i < 15; i++) {
          if (otc.showRemaining) {
            cards = [];
            for(let j=0; j < otc.allCards[i].length; j ++) {
              if(!otc.util.cardInArray(otc.allCards[i][j], otc.playedCards[i])) {
                cards.push(otc.allCards[i][j]);
              }
              otc.$playedCards[i].html(otc.util.displayCardsHtmlString(cards));
            }
          } else {
            otc.$playedCards[i].html(otc.util.displayCardsHtmlString(otc.playedCards[i]));
          }
        }
      },

      updateDisplayStats: function() {
        dirs = ['east', 'north', 'south', 'west'];
        for(i in dirs) {
          stats = otc.stats[otc.playerNames[dirs[i]]];
          if (stats != undefined) {
            t = 'L' + stats.general.level + ' A' + stats.custom.abandonmentRate + ' W' + stats.general.winningPercentage + '';
            otc.$playerMyLevel[dirs[i]].text(t);

            t = 'T' + stats.custom.tichuCoefficient + '  O' + stats.custom.oneTwoCoefficient;
            otc.$playerTichuCoefficient[dirs[i]].text(t);
          } else {
            otc.$playerMyLevel[dirs[i]].text('');
            otc.$playerTichuCoefficient[dirs[i]].text('');
          }
        }
//        console.log('updated shown stats');
      }
    }
  }

  if (!window.otc) {
    window.otc = OnlineTichuCounter;
  }

  otc.$counterField.hide();

  // add functionality to smartFold button
  otc.$smartFold.click(function () {
    otc.smartFold = !otc.smartFold;
    if (otc.smartFold) {
      otc.$smartFoldValue.text(otc.$smartFoldValue.data('on'));
    } else {
      otc.$smartFoldValue.text(otc.$smartFoldValue.data('off'));
    }
  });

  // add functionality to show button
  otc.$showCardCounter.click(function () {
    otc.showCardCounter = !otc.showCardCounter;
    if (otc.showCardCounter) {
      otc.$showCardCounterValue.text(otc.$showCardCounterValue.data('on'));
      otc.$counterField.show();
    } else {
      otc.$showCardCounterValue.text(otc.$showCardCounterValue.data('off'));
      otc.$counterField.hide();
    }
  });

  otc.$showCountedCards.click(function () {
    otc.showCountedCards = !otc.showCountedCards;
    if (otc.showCountedCards) {
      otc.$showCountedCardsValue.text(otc.$showCountedCardsValue.data('on'));
      otc.$playedHigh.show();
      otc.$playedLow.show();
    } else {
      otc.$showCountedCardsValue.text(otc.$showCountedCardsValue.data('off'));
      otc.$playedHigh.hide();
      otc.$playedLow.hide();
    }
  });

  otc.$davidProtection.click(function () {
    otc.davidProtection = !otc.davidProtection;
    if (otc.davidProtection) {
      otc.$davidProtectionValue.text(otc.$davidProtectionValue.data('on'));
    } else {
      otc.$davidProtectionValue.text(otc.$davidProtectionValue.data('off'));
    }
  });

  otc.$autoWish.click(function () {
    otc.autoWish = !otc.autoWish;
    if (otc.autoWish) {
      otc.$autoWishValue.text(otc.$autoWishValue.data('on'));
      otc.action.selectAutoWish();
    } else {
      otc.$autoWishValue.text(otc.$autoWishValue.data('off'));
      otc.action.deSelectAutoWish();
    }
  });

  otc.$showRemaining.click(function () {
    otc.showRemaining = !otc.showRemaining;
    if (otc.showRemaining) {
      otc.$showRemainingValue.text(otc.$showRemainingValue.data('on'));
    } else {
      otc.$showRemainingValue.text(otc.$showRemainingValue.data('off'));
    }
    otc.action.drawPlayedCards();
  });

  for(let i = 1; i < 15; i++) {
    otc.$playedCards[i] = $('#playedCards' + i);
  }

  otc.action.reset();
  otc.util.populateAllCards();

  // overwrite functionality of fold button
  ot.$fold.unbind();
  ot.$fold.hide().click(function () {
    if (otc.davidProtection) {
      if(ot.$passCards().length != 0 && !otc.davidProtectionTriggered) {
        console.log('david protection triggered');
        ot.$gameMessage.text("Selected cards detected. Press again to fold!");
        ot.HorizontalAlign(ot.$gameMessage);
        otc.davidProtectionTriggered = true;
        return;
      }
    }
    ot.action.Fold();
    otc.davidProtectionTriggered = false;
		$(this).hide();
  });

  MyTableState = (function() {
    var cachedFunction = ot.reaction.TableState;

    return function() {
      var result = cachedFunction.apply(this, arguments);

      message = arguments[0];

//      console.log(message);

  //    console.log('detected table state change event');
//      console.log(message.Table.Players);

      // reset played cards at start of round
      if(message.Table.Status == 'WaitForNextCards' && otc.totalPlayed.length != 0) {
        otc.action.reset();
      }

      if(message.Table.Status == 'Playing') {
        otc.action.handlePlayedCards(message.Table.TableCards);
      }

      otc.action.drawPlayedCards();
      
//      console.log('reached smartFold point');
      spectator = true;

      // reset player names as they might have changed
      otc.playerNames = {};
    
      southPosition = 1;
      $(message.Table.Players).each(function () {
        if (this.Username == ot.$Username.val()) {
          spectator = false;
          southPosition = this.Position;
//          console.log('found player');
          if (message.Table.Turn == this.Position) {
//            console.log('my turn!');
            if (this.Cards.length < 4 && this.Cards.length < message.Table.TableCards.length) {
              if (otc.smartFold) {
                if(this.MustFold) {
                  ot.action.Fold();
                  console.log('smart fold activated');
                } else {
                  console.log('prevented bug by not smartfolding');
                }
              }
            }
          }
        }

        // get stats of player if we don't have them yet)
        if (otc.stats[this.Username] === undefined) {
          otc.util.getStats(this.Username);
        }
      });

      $(message.Table.Players).each(function () {
        dirs = ['south', 'east', 'north', 'west'];
        index = (this.Position - southPosition + 4) % 4;
        otc.playerNames[dirs[index]] = this.Username;
      });

      otc.action.updateDisplayStats();

      return result;
    }

  })();


  MyChat = (function() {
    var cachedFunction = ot.reaction.Chat;

    return function() {
      var result = cachedFunction.apply(this, arguments);

      message = arguments[0];
      if (message.User.Username === "System") {
        var messageArray = message.Text.replace(/</g, '&lt;').replace(/>/g, '&gt;').split(' ');
        message.Text = messageArray.join(' ');
        messageArray = message.Text.replace(/</g, '&lt;').replace(/>/g, '&gt;').split(' ');
        
        for(var i in messageArray) {
          if(messageArray[i] == "dogs") {
            otc.action.handlePlayedCard({
              "Shape": 5,
              "Value": 0
            });
          }
        }
      }

      return result;
    }
  })();

  MyExchangeCards = (function() {
    var cachedFunction = ot.action.ExchangeCards;

    return function() {

      otc.exchangedTo['west'] = {
        Shape: ot.$westExchange.children('li:nth-child(1)').data('shape'),
        Value: ot.$westExchange.children('li:nth-child(1)').data('value') };
      otc.exchangedTo['north'] = {
        Shape: ot.$northExchange.children('li:nth-child(1)').data('shape'),
        Value: ot.$northExchange.children('li:nth-child(1)').data('value') };
      otc.exchangedTo['east'] = {
        Shape: ot.$eastExchange.children('li:nth-child(1)').data('shape'),
        Value: ot.$eastExchange.children('li:nth-child(1)').data('value') };

      console.log(otc.exchangedTo);

      if(otc.autoWish) {
        otc.action.selectAutoWish();
      } else {
        otc.action.deSelectAutoWish();
      }

      var result = cachedFunction.apply(this, arguments);
      return result;
    }
  })();

  MyReviewExchange = (function() {
    var cachedFunction = ot.reaction.ReviewExchange;

    return function() {
      var result = cachedFunction.apply(this, arguments);
      return result;
    }
  })();

  ot.reaction.TableState = MyTableState;
  ot.reaction.Chat = MyChat;
  ot.action.ExchangeCards = MyExchangeCards;
};


// Special care is to be taken to safely inject our javascript into the website
// without the website being able to talk back to greasemonkey
// (which would be a security problem)
// see
// https://stackoverflow.com/questions/5006460/userscripts-greasemonkey-calling-a-websites-javascript-functions
// and the excellent answer by Wayne for details on this
function exec(fn) {
    var script = document.createElement('script');
    script.setAttribute("type", "application/javascript");
    script.textContent = '(' + fn + ')();';
    document.body.appendChild(script); // run the script
    document.body.removeChild(script); // clean up
}

exec(injectCounter);