//...

//for each unique user
for(var i in GitHubRepos.displayObjects)
{
    //format the github url for our given user and callback function
    var github_url = format(GITHUB_JSON_URL, i, "GitHubRepos.DisplayRepos");

    //insert a script into the DOM to add our JSON data via the github url
    //once the script loads it will callback the DATA_DISPLAY_FUCNTION
    $('head').append(format(DYNAMIC_SCRIPT_TEMPLATE, github_url));
}

//...