function twitterCallback(obj) {
var friendsHTML=””;
for (var i=0; i<obj.length; i++){
//alert(i);
var profile_image_url = obj[i].profile_image_url;
var screen_name = obj[i].screen_name;
var user_name = obj[i].name;
friendsHTML+= ('‘)
}
document.getElementById(‘my_twitter_friends’).innerHTML = friendsHTML;
}

http://twitter.com/statuses/friends/766854.json?callback=twitterCallback