jQuery UI tab selection method doesn't work

I have two tabs, each with a submit button. After the button is clicked, I need to reload the content of that particular tab to get the updated data from the server.

if (validStatus()) {
    $.ajax({
        //...
        success: reloadTab
    });
}    

function reloadTab() {                
            var currentTab = $("#tabs").tabs("option", "active");
            alert(currentTab);
            $('#tabs').tabs('select', currentTab);
            alert(currentTab);
        }

When the button is clicked, the tabs do not refresh. I see the first alert but not the second.

HTML is as follows:

head:

<link rel="stylesheet" href="@this.Url.Content("//code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css")" />
<script>
    $(function () {
        $("#tabs").tabs();
    });
</script>

body:

<div id="tabs">
<ul>
    <li><a href="#Tab1" title="Tab1">The first tab</a></li>
    <li><a href="#Tab2" title="Tab2">the second tab</a></li>
    <li><a href="#Success" title="Success">Success</a></li>
</ul>

<div id="Success">
    testing
</div>

<div id="Tab1">

    <fieldset >
        <legend>Overview</legend>
        <input type="button" id="submit1" value="submit" />
        <br />
    </fieldset>

    <fieldset style="width: 700px;">
        <legend>Overview</legend>
        <div>
            <table >
            //updated with ajax
            </table>
        </div>
    </fieldset>

    <script>
        //reloadTab is in here
    </script>
</div>

<div id="Tab2">

    <fieldset style="float:left; width:300px;">
        <input id="submit2" type="button" value="submit"/>
    </fieldset>

    <fieldset style="float:left;">
        <legend>Overview</legend>
        <table>
        //updated with ajax
        </table>
    </fieldset>

    <script>.....</script>
</div>