<select id="select" onchange="pop(this)">
<option value="-1">--请选择--</option>
<option value="0">option 1 </option>
<option value="1">option 2</option>
<option value="2">option 3</option>
</select>
<SCRIPT LANGUAGE="JavaScript">
function pop(e){
alert(e.options[e.selectedIndex].text)
}
</SCRIPT>