Thread

{exp:search:simple_form channel="news" category="46" search_in="everywhere" status="open" 
 where="all" result_page="search/searchresults" no_result_page="search/noresults"}
<div id="searching">
<input id="searchbox" name="keywords" placeholder="Search Projects"/>
<button id="search" name="submit" type='submit'><i class='icon-search'></i></button>
</div>
{/exp:search:simple_form}

{exp:search:advanced_form result_page="search/searchtest"}

              <input type="text" class="input" name="keywords" />
<!--                 hidden values to search everything in News with Category Project     -->
               <input type="hidden" name="search_in" value="everywhere" />
               <input type="hidden" name="where" value="all" />
               <input type="hidden" id="channel_id" name='channel_id[]' value="7" />
               <input type="hidden" name="cat_id[]" value="45">
      
     <input type='submit' value='Search' class='submit' />
   

{/exp:search:advanced_form}