The source code for the default search button is this:
<input type="text" id="tubepress_search" name="tubepress_search" class="tubepress_text_input" value="<?php echo htmlspecialchars(${org_tubepress_api_const_template_Variable::SEARCH_TERMS}); ?>"/> <button class="tubepress_button" title="Find video!"><?php echo htmlspecialchars(${org_tubepress_api_const_template_Variable::SEARCH_BUTTON}); ?></button>and default HTML output looks like this:
<fieldset class="tubepress_search"> <input type="text" id="tubepress_search" name="tubepress_search" class="tubepress_text_input" value=""/> <button class="tubepress_button" title="Find video!">Search</button> </fieldset>
But how do I remove the br's before and after the button? As far as I can see, they are not generated in search_input.tpl.php