var lastCompletion = '';

  $('#m').keydown(function(e)
{
    console.log('Action');
    names = [];
    for(x in chat.currentChannel.users)
    {
      if(x > 0)
      {
        names.push(chat.currentChannel.users[x].name);
      }
    }

  var keyCode = e.keyCode || e.which;
  if(keyCode == 9)
  {
  e.preventDefault();
  if(this.value == '')
      {
        if(lastCompletion != '')
        {
          this.value = lastCompletion + ', ';
        }
        return;
      }

      var matches = [];
  for(i=0;i<names.length;i++)
  {
    if(this.value.toLowerCase() == names[i].substring(0,this.value.length).toLowerCase())
    {
    matches.push(names[i]);
    }
  }
      console.log(matches);
  if(matches.length == 1)
  {
        lastCompletion = matches[0];
    this.value = matches[0] + ', ';
  }
  else if(matches.length > 1)
  {
    var common = matches[0];
    for(i=1;i<matches.length;i++)
    {
    common = inCommon(common,matches[i]);
    }
    this.value = common;
  }
  }
});