Cache Problem? Maybe?

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I have an AJAX script which appends the following to a span (well, it's similar):

<select id='select_thing' onchange='functionhere();'><option value='1' selected>1</option><option value='2'>2</option></select>

Whenever functionhere() is called, it repeats it (appends the above into that span again).If you select two, it will go back to 1, which it's supposed to do (since, when the AJAX is called, it just puts the above code into the innerHTML).However, if I say:

alert(select_thing.value);

after changing the value to 2, it always says 2, even though the selected value is 1.So, basically, it seems to be caching the first selected option or something.Any fix?Thanks