How do I hide default options

Hi, any assistance you could give would be greatly appreciated. I'm editing a page with options available under a SELECT command, but wish to create default selections hidden from view.

An example of current code:
<SELECT NAME="return_size">
<OPTION VALUE="1">large</OPTION>
<OPTION SELECTED VALUE="2">medium</OPTION>
<OPTION VALUE="3">small</OPTION>
</SELECT>

I want to hide this and retain the 2nd value as default - what coding could I use?

Another example:
<INPUT TYPE="RADIO" NAME="return_kbn" VALUE="1" CHECKED>Characters:
<INPUT TYPE="TEXT" NAME="return_text" SIZE=50 VALUE="Return">

Many thanks in advance for any advice you could give.