combobox how to show inputField

[plodos]

<center>
<form name="combowithtext">
<select name="example" size="1" onChange="showtext()">
<option value="AAA">AAA</option>
<option value="BBB">BBB</option>
<option value="CCC">CCC</option>
</select>

<input name="text" type="text" id="text" size="28"/>

<script language="javascript">
<!--
var shortcut=document.combowithtext
var descriptions=new Array()

descriptions[0]="aaa"
descriptions[1]="bbb"
descriptions[2]="ccc"

shortcut.text.value=descriptions[shortcut.example.selectedIndex]


function showtext()
{
shortcut.text.value=descriptions[shortcut.example.selectedIndex]
}
//-->
</script>

</form>
</center>

 

There will be only bombobox in the form, input field must be hidden, but i didnt do it

 

If the user select AAA from combobox, then input field will be visible with aaa text

 

If the user select BBB from combobox, then input field will be visible with bbb text

 

If the user select BBB from combobox, then input field will be visible with ccc text

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I used disabled but I dont want that

<input disabled  name="text" type="text" id="text" size="28"/>

I need visible/hidden inputField

 

Pls help me...

[secoxxx]

<input name="text" type="text" id="text" size="28" style="border-style: none; border-width: 0;"/>