function getTwUrl(){
  return 'http://twitter.com/home?status='+location.href+'%20#as4.org';
}
var checkTw = function(data){
  try{
    var tw_msg='';
    for (var i in data.results)
    {
      tw_msg = tw_msg + data.results[i].text.replace(/http.+/g,'') + '<br />';
    }
    document.getElementById('tw_msg').innerHTML=tw_msg;
  }catch(e){alert(1);}
}