Change dates inside span to match user's timezone
<p>I have this function:</p>

<pre><code>function get_time_zone_offset() {   
    var current_date = new Date();   
    return -current_date.getTimezoneOffset() / 60; 
}
</code></pre>

<p>I want a jQuery code to change every span which class is 'timeago' title value to its value plus the number the function above returns. For example:</p>

<p>Before: </p>

<pre><code>&lt;span class="timeago" title="7/4/2012 9:28:30 AM"&gt;7/4/2012 9:28:30 AM&lt;/span&gt;
</code></pre>

<p>After: </p>

<pre><code>&lt;span class="timeago" title="7/4/2012 12:28:30 PM"&gt;7/4/2012 12:28:30 PM&lt;/span&gt;
</code></pre>
