Submit button

Hi,

I want to insert this search button

<input type="submit" value="submit">

To this html.

<div class="search_jobs">
  <div class="search_keywords">
    <label for="search_keywords">Keywords</label>
    <input type="text" name="search_keywords" id="search_keywords" placeholder="Keywords" value="" />
  </div>
  <div class="search_location">
    <label for="search_location">Location</label>
    <input type="text" name="search_location" id="search_location" placeholder="Location" value="" />
  </div>
</div> 

Where do I find it?

Functions.php?

Thanks

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