Ajax :: Call Is Not Showing Correctly?

i'm doing the following on a select box to load the next select box (in a td with the id)

if I look at the html returned by the ajax call I get

<select name=optionvalue /><option value='test 1'>test 1</option><option value='test 2'>test 2</option><option value='test 3'>test 3</option></select>

but it's showing as

the select box and then

test 1test 2test 3

my javascript code is

function Loadoptionvalueselect() {
//alert("here");
urltoajax = "getoptionsvaluesselect.asp?1=1"
strarea = document.getElementById('optionid').value;

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