java script form manipulation

[ltbaggz]

dont know too much about javascript and i need to do some form manipulation with it.  basically i want to take the info from a normal input text value into a select option box using the onlick event.
what is the best way to go about doing this?

[code]
<p>
<label for="type">Type:</label>
<input type="text" size="30" id="type" name="type" />
</p>

<input id="add_type" type="button" value="Create >>"  onClick="create_type();" />

<div id="types_entered">
Types<br />
<select name="input" multiple="multiple" size="4" >
<option value="15">insert value here </option>
</select>
</div>
[/code]

[ltbaggz]

sovled.

[i][b]fenway: How?[/b][/i]