fix preview link

  <div id="header">

    <div class="wrap" id="header-wrap">

      <div class="col_3 logo landing-logo" style="width:240px">

        <a href="<?cs var:toroot ?>index.html">

        <a href="<?cs var:toroot ?>preview/index.html">

          <img src="<?cs var:toroot ?>assets/images/android.png" height="25" alt="Android"

            style="margin:-3px 0 0" />

        </a>

      </div>

      <div class="col-8" style="margin:0"><h1 style="margin: 2px 0 0 0px;padding:0;line-height:16px;

      <div class="col-8" style="margin:0"><h1 style="margin: 4px 0 0 0px;padding:0;line-height:16px;

color:#666;font-weight:100;font-size:27px;">L Developer Preview</h1></div>

      <?cs # ADD SEARCH AND MENU ?>