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<HTML>
<HEAD>
<META http-equiv='Content-Type' content='text/html; charset=gb2312'>
<TITLE>可输入的下拉框</TITLE>
</HEAD>
<script >
function onch(val)
{
var sel= document.getElementById("typename");
sel.parentNode.nextSibling.value=val;
if(val == " "){
sel.parentNode.nextSibling.focus();
}
}
</script>
<BODY >
<div style="position:relative;">
<span style="margin-left:100px;width:18px;overflow:hidden;" >
<select id="typename" style="width:118px;margin-left:-100px" onChange="onch(this.value)">
<option value=" " style="width:118px;margin-left:-100px" > --请选择-- </option>
<option value="AAAAA"> AAAAA </option>
<option value="BBBBB"> BBBBB </option>
<option value="CCCCC"> CCCCC </option>
</select>
</span>
<input name="box" style="width:100px;position:absolute;left:0px;">
</div>
</BODY></HTML>