You can navigate to an anchor by specifying it's name in the hyperlink property.
<controls:TextLink text="Contact Us" id="contactUsLink1" hyperlink="#anchor"/>
You can also specify an anchor using the @ sign,
<controls:TextLink text="Contact Us" id="contactUsLink1" hyperlink="@anchor"/>
Or you can specify the vertical position,
<controls:TextLink text="Contact Us" id="contactUsLink1" hyperlink="@1000"/>