<form action="" method="post" name="form">
<select name="izbor">
<OPTION VALUE="az" >az</OPTION>
<OPTION VALUE="da" >da</OPTION>
<OPTION VALUE="ne" >ne</OPTION>
<OPTION VALUE="koe" >koe</OPTION>
</select>
<br>
<input type="submit" name="Submit" value="Бутон">
</form>