title: sort() doesn't work correctly in mozilla & opera
body: <p>i need to sort one array but it works correctly only in Chrome. in the mozilla specification i found this text but nevertheless can't fix this: </p>
  
  <blockquote>
    <p>"The elements of this array are sorted. The sort is not necessarily
    stable (that is, elements that compare equal do not necessarily remain
    in their original order). If comparefn is not undefined, it should be
    a function that accepts two arguments x and y and returns a negative
    value if x &lt; y, zero if x = y, or a positive value if x > y."</p>
  </blockquote>
  
  <p>and this link <a href="https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/sort" rel="nofollow">https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/sort</a>  may be it will help you and me</p>
  
  <p>this is my code</p>
  
  <pre><code>arr.sort(sortTrip); 
  
  function sortTrip(a, b) {   
  
      if (a.to != b.from) return 1;
      if (a.to == b.from) return -1;
  
  }
  </code></pre>
  
  <p>And this is the <code>arr</code>:</p>
  
  <pre><code>var arr = [
      {
          "from": "Moscow",
          "to": "Rome",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      },
      {
          "from": "Oslo",
          "to": "Paris",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      },
      {
          "from": "Helsinki",
          "to": "Tokio",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      },
      {
          "from": "Tokio",
          "to": "Moscow",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      },
      {
          "from": "Paris",
          "to": "New-York",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      },
      {
          "from": "Rome",
          "to": "Oslo",
          "transport": "NSB Regiontog Train",
          "seat": "25"
      }
  ]
  </code></pre>
  
  <p>result must be </p>
  
  <ul>
  <li>Helsinki - Tokio</li>
  <li>Tokio - Moscow</li>
  <li>Moscow - Rome</li>
  <li>Rome - Oslo</li>
  <li>Oslo - Paris</li>
  <li>Paris - New-York</li>
  </ul>