I did have another post which was saying how the search was being ignore because I was trying to insert into a locked region of a template. As it had already worked and I had been getting some results, I didn't believe this to be true. However after releasing the page from the template, I now see that a hidden field has been added. This is the form now:
<form action="search-results.php" id="searchform" name="searchform" method="post">
<input name="searchbox" type="text" id="searchbox" placeholder="Search...">
<input type="image" src="images/search-trans.png" width="26px" height="26px" border="0" alt="GO" name="button" id="button" value="Button">
<input type="hidden" name="WADbSearch1" value="Submit">
</form>
<input type="hidden" name="WADbSearch1" value="Submit"> was added. What is this used for, and is it needed for what I am trying to achieve? Also, just to ask again, should I be using GET or POST for the switching of spaces to commas?