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<div class="lb_list">
<select class="select01" onchange="usuxx(this.value)">
{php $field = dr_field_options('chelei',0, 'case');}
{loop $field $i $t}
<option {if $i==$get.chelei}selected{/if} value="{$i}">
{$t}
</option>
{/loop}
</select>
<script>
function usuxx(v) {
var url = "{dr_search_url($params, 'chelei', 'usuxx', null,'case')}";
window.location.href = url.replace('usuxx', v);
}
</script>
</div>
下拉框下面的筛选选项,应该怎么和下拉框选择变化时跟着变化.