<form onsubmit="document.getElementById('sfSbm').disabled=true" method="get" action="/search/" class="hsearch">  
<a href="javascript://" onclick="$('#addsearch').click()" class="hsearch_link"><i class="fa fa-search" type="submit"></i></a>
<input type="submit" style="display:none;" id="addsearch">
<input type="text" name="q" value="" placeholder="Введите фразу для поиска">  
</form>