var subval1 = new Array();
//数组结构：一级根值,二级根值,二级显示值


subval1[0] = new Array('33','36','购物袋')


subval1[1] = new Array('33','37','垃圾袋')


subval1[2] = new Array('33','38','纸塑复合包装袋')


subval1[3] = new Array('34','39','盒')


subval1[4] = new Array('34','40','碗')


subval1[5] = new Array('34','41','盘')


subval1[6] = new Array('34','42','吸管')


subval1[7] = new Array('34','43','碟')


subval1[8] = new Array('34','44','杯')


subval1[9] = new Array('35','45','原料')


subval1[10] = new Array('35','46','混合料')


subval1[11] = new Array('33','57','快递包装袋')


subval1[12] = new Array('33','59','降解地膜')



function changecat(locationid)
{
    document.thisform.nid.length = 0;
    document.thisform.nid.options[0] = new Option('选择小类','');
    for (i=0; i<subval1.length; i++)
    {
        if (subval1[i][0] == locationid)
        {document.thisform.nid.options[document.thisform.nid.length] = new Option(subval1[i][2],subval1[i][1]);}
    }
}