http://blog.darkhax.com/2009/04/30/einstein-home-statistics-in-wordpress-sidebar

einstein-by-hand.js

var theElement = "einstein-sb";
var req = false;

getEinsteinInfo();

function loadXMLDoc(url, method, async) {
    try
    {
        if (window.XMLHttpRequest)
        {
            req = new XMLHttpRequest();
            req.onreadystatechange = processReqChange;
            req.open(method, url, async);
            req.send(null);
        }
        else if (window.ActiveXObject)
        {
            req = new ActiveXObject("Microsoft.XMLHTTP");
            if (req)
            {
                req.onreadystatechange = processReqChange;
                req.open(method, url, async);
                req.send();
            }
        }
    }
    catch(e)
    {
        req = false;
    }
}

function getEinsteinInfo()
{
    var url = window.location.protocol + "//" + window.location.host + "/blog/einstein.php";
    loadXMLDoc(url, "GET", true);
}

function processReqChange()
{
    if (req && req.readyState == 4 && req.status == 200 && document.getElementById)
    {
        try
        {
            var element = document.getElementById(theElement);
            element.innerHTML = req.responseText;
        }
        catch(e)
        {
        }
    }
}

einstein.js

$(document).ready(function(){
  jQuery('#einstein-sb').load(window.location.protocol + "//" + window.location.host + "/blog/einstein.php");
});

einstein.php

<?php
    function get_einstein_team($url)
    {
        $content = file_get_contents($url);
        $xml = new SimpleXMLElement($content);
        return $xml->name;
    }

    function get_einstein_stat_info()
    {
        try
        {
            $authkey = "auth-key-goes-here";
            $url = "http://einstein.phys.uwm.edu/";
            $content = file_get_contents($url . "show_user.php?auth=$authkey&format=xml");
            $xml = new SimpleXMLElement($content);

            $username = $xml->name;
            $credit = number_format($xml->total_credit, 3);
            $team = get_einstein_team($url . "team_lookup.php?team_id=$xml->teamid");

            $link = $url . "show_user.php?userid=$xml->id";

            $html = "<ul>\n";
            $html .= "<li><a href=\"$link\" target=\"_blank\"><b>Username:</b> $username</a></li>\n";
            $html .= "<li><a href=\"$link\" target=\"_blank\"><b>Team:</b> $team</a></li>\n";
            $html .= "<li><a href=\"$link\" target=\"_blank\"><b>Total Credit:</b> $credit</a></li>\n";
            $html .= "</ul>";

            return $html;
        }
        catch (Exception $e)
        {
            return "<ul><li><a>Error getting stats</a></li></ul>\n";
        }
    }

    echo get_einstein_stat_info();
?>

script-tags.php

<script src="<?php echo get_option('siteurl') . "/wp-includes/js/jquery.js"; ?>" type="text/javascript"></script>
<script src="<?php echo get_option('siteurl') . "/wp-includes/js/einstein.js"; ?>" type="text/javascript"></script>

sidebar.html

<li id="Einstein">
  <h2>Einstein@Home</h2>
  <div id="einstein-sb">
    <ul>
      <li><a>Loading stats...</a></li>
    </ul>
  </div>
</li>