双夏拉列表

<script language="javascript">
 var po_detail_show = new Array();
 var po_detail_value = new Array();
 po_detail_show[0]=new Array();
 po_detail_value[0]=new Array();
 po_detail_show[0][0]='(全部)计算机/互联网/通讯类';
 po_detail_value[0][0]='0100';
 po_detail_show[0][1]='首席技术执行官';
 po_detail_value[0][1]='0101';
 po_detail_show[0][2]='技术总监/经理';
 po_detail_value[0][2]='0102';
 
 po_detail_show[1]=new Array();
 po_detail_value[1]=new Array();
 po_detail_show[1][0]='(全部)销售类';
 po_detail_value[1][0]='0200';
 po_detail_show[1][1]='销售总监';
 po_detail_value[1][1]='0201';
 po_detail_show[1][2]='销售经理';
 po_detail_value[1][2]='0202';
 po_detail_show[1][3]='区域销售经理';
 po_detail_value[1][3]='0226';
 
 
 function Do_po_Change(form){
         var num,n, i, m;
         //num= GetObjID('d_position1');
         m = document.powersearch.province.selectedIndex-1;
         n = document.powersearch.city.length;
         for(i = n - 1; i >= 0; i--)
                 document.powersearch.city.options[i] = null;
 
         if (m>=0) {
         for(i = 0; i < po_detail_show[m].length; i++){
                 alert("m----------------------"+m);
                 alert("n----------------------"+n);
                 NewOptionName = new Option(po_detail_show[m][i], po_detail_value[m][i]);
                 document.powersearch.city.options[i] = NewOptionName;
         }
         document.powersearch.city.options[0].selected = true;
         }
 } 
 
</script>

<form name="powersearch">
<select name="province" onchange='Do_po_Change(this);' >
 <option></option>
 <option value="0">广东</value>
 <option value="1">河北</value>
</select>

<select name="city">
</select>
</form>