Home Page Component: AJAX Toolkit 29.0 R3

<!-- Include AJAX Toolkit 29.0 -->
<script src="/soap/ajax/29.0/connection.js"></script>

<!-- Set the Ajax client's session ID -->
<script type="text/javascript">

    /* Get the session ID from the "sid" cookie */

    var sidRegExp = /sid=([^;]+);/;
    var sidMatches = sidRegExp.exec(document.cookie);
    var sid = sidMatches[1];

    /* Set the session ID for the Ajax client */

    sforce.connection.sessionId = sid;
</script>

<!-- Retrieve and display the organization to confirm success -->
<span id="ajaxOrgName"></span>
<script type="text/javascript">
    var results = sforce.connection.query("SELECT Name FROM Organization");
    var orgName = results.records.Name;  /* Valid only when 1 record in results */
    document.getElementById("ajaxOrgName").innerHTML = orgName;
</script>