javascript saber el valor de un combobox select

<script language="javascript">

function decir()
{
var color=document.getElementById('color').options[document.getElementById('color').selectedIndex].value;

alert(color);
}

</script>



<select id="color" name="color" size="1">
<option value="" selected="selected"> --------- </option>
<option value="carbon">carbon</option>
<option value="kiwi">kiwi</option>
<option value="rojo">rojo</option>
</select>





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