searchform.php

    <form id="searchform" method="get" action="<?php echo esc_url( home_url( '/' ) ); ?>">

      <div>
         <input type="text" name="s" id="s" size="15" />
      </div>

      <input type="submit" value=<?php _e('Search',ALLI_TEXTDOMAIN) ?> id="searchsubmit" />

    </form>