DWR下拉框 某个值绑定selected

<form name="theform">
<div>
	<SELECT NAME="selectlist">
		<OPTION VALUE="0">select0</OPTION>
		<OPTION VALUE="1">select1</OPTION>
		<OPTION VALUE="2">select2</OPTION>
		<OPTION VALUE="3">select3</OPTION>
		<OPTION VALUE="4">select4</OPTION>
		<OPTION VALUE="5">select5</OPTION>
		<OPTION VALUE="6">select6</OPTION>
		<OPTION VALUE="7">select7</OPTION>
	</SELECT>
</div>
</form>
<script>
	select(8);
	function select(obj){
		for(var i=0;i<document.theform.selectlist.length;i++){
			if(obj==document.theform.selectlist[i].value){
				document.theform.selectlist[i].selected=true;
				break;
			}
		}
	}
</script>