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headers / Bittrex Quick buy and sell

// ==UserScript==
// @name         Bittrex Quick buy and sell
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Adds quick sell and bu buttons. For bid adds 0.00000001 and select max. For ask drops 0.00000001 like buy action.
// @author       Can
// @license MIT
// @match        https://bittrex.com/Market/Index?MarketName*
// @grant        none
// ==/UserScript==

(function () {
  'use strict';
  jQuery('#ifrm').height(450);

  (function () {
    var $buyForm = $('[name="price_Buy"]').parents('form');
    var $button = $('<button class="btn btn-success" type="button">Quick Buy</button>');
    var $buyButton = $buyForm.find('[type=submit]');
    $buyButton.wrap('<div id="buyWrapper" class="btn-group">');
    $buyForm.find('div:last-child').addClass('text-center');
    $buyButton.css('margin-top', 0);
    $button.click(function () {
      var $max = $('[name="quantity_Buy"]').parents('.input-group').find('button:first');
      if (!$max.is('.active')) {
        $max.click();
      }
      var value = parseFloat($('#buyOrdersTable tbody tr:first td:nth-child(5)').text());
      var newValue = value + 0.00000001;
      $('[name="price_Buy"]').val(newValue).trigger('change');
      $buyButton.click();
    });
    $('#buyWrapper').append($button);
  })();
  (function () {
    var $buyForm = $('[name="price_Sell"]').parents('form');
    var $button = $('<button class="btn btn-success" type="button">Quick Sell</button>');
    var $buyButton = $buyForm.find('[type=submit]');
    $buyButton.wrap('<div id="sellWrapper" class="btn-group">');
    $buyForm.find('div:last-child').addClass('text-center');
    $buyButton.css('margin-top', 0);
    $button.click(function () {
      var $max = $('[name="quantity_Sell"]').parents('.input-group').find('button:first');
      if (!$max.is('.active')) {
        $max.click();
      }
      var value = parseFloat($('#sellOrdersTable tbody tr:first td:nth-child(5)').text());
      var newValue = value - 0.00000001;
      $('[name="price_Sell"]').val(newValue).trigger('change');
      $buyButton.click();
    });
    $('#sellWrapper').append($button);
  })();

})();