var formname = "regist_form";
function change_comtype() {
    $('com_type2').length = 0;
	switch ($('com_type').getValue()) {
	case "sender":
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("化工","hg"));
		$('com_type2').options.add(new Option("医保","yb"));
		$('com_type2').options.add(new Option("土畜","tc"));
		$('com_type2').options.add(new Option("粮油","ly"));
		$('com_type2').options.add(new Option("五矿","wk"));
		$('com_type2').options.add(new Option("机械","jx"));
		$('com_type2').options.add(new Option("轻工","qg"));
		$('com_type2').options.add(new Option("纺织","fzi"));
		$('com_type2').options.add(new Option("服装","fzang"));
		$('com_type2').options.add(new Option("电子","dz"));
		$('com_type2').options.add(new Option("电器","dq"));
		$('com_type2').options.add(new Option("水产","sc"));
		$('com_type2').options.add(new Option("家具","jj"));
		$('com_type2').options.add(new Option("车辆","cl"));
		$('com_type2').options.add(new Option("其他","qt"));
		break;
	case "trans":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("船东","shippingowner"));
		$('com_type2').options.add(new Option("船代","agent"));
		$('com_type2').options.add(new Option("货代","forwarder"));
		break;
	case "logist":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("理货仓储","l_lhgs"));
		$('com_type2').options.add(new Option("货柜拖车","l_jzx"));
		$('com_type2').options.add(new Option("托盘垫木","l_tpgs"));
		$('com_type2').options.add(new Option("报关报验","l_bgh"));
		$('com_type2').options.add(new Option("出口代理","l_ckgs"));
		$('com_type2').options.add(new Option("进口代理","l_jkgs"));
		$('com_type2').options.add(new Option("私人物品","l_srwp"));
		$('com_type2').options.add(new Option("场站服务","l_czqy"));
		$('com_type2').options.add(new Option("货柜服务","l_hjgs"));
		break;
	case "other":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("国际空运","hkys"));
		$('com_type2').options.add(new Option("陆路运输","llys"));
		$('com_type2').options.add(new Option("特快专递","tkzd"));
		$('com_type2').options.add(new Option("铁路运输","tlys"));
		break;
	case "way":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("船舶行业","w_cbhy"));
		$('com_type2').options.add(new Option("货物保险","w_hwbx"));
		$('com_type2').options.add(new Option("商品检验","w_sj"));
		$('com_type2').options.add(new Option("国际金融","w_yh"));
		$('com_type2').options.add(new Option("海事服务","w_hsfw"));
		$('com_type2').options.add(new Option("港口码头","w_mt"));
		$('com_type2').options.add(new Option("物流科技","w_wlkj"));
		$('com_type2').options.add(new Option("机关团体","w_jg"));
		$('com_type2').options.add(new Option("其他","w_qt"));
		break;
	default	:
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		break;

	}
}

function change_comtype_ie(str) {
	document.forms[formname].pcomtype1.value = str;
  	switch ( str ) {
	case "sender":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("化工","hg"));
		$('com_type2').options.add(new Option("医保","yb"));
		$('com_type2').options.add(new Option("土畜","tc"));
		$('com_type2').options.add(new Option("粮油","ly"));
		$('com_type2').options.add(new Option("五矿","wk"));
		$('com_type2').options.add(new Option("机械","jx"));
		$('com_type2').options.add(new Option("轻工","qg"));
		$('com_type2').options.add(new Option("纺织","fzi"));
		$('com_type2').options.add(new Option("服装","fzang"));
		$('com_type2').options.add(new Option("电子","dz"));
		$('com_type2').options.add(new Option("电器","dq"));
		$('com_type2').options.add(new Option("水产","sc"));
		$('com_type2').options.add(new Option("家具","jj"));
		$('com_type2').options.add(new Option("车辆","cl"));
		$('com_type2').options.add(new Option("其他","qt"));
		break;
	case "trans":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("船东","shippingowner"));
		$('com_type2').options.add(new Option("船代","agent"));
		$('com_type2').options.add(new Option("货代","forwarder"));
		break;
	case "logist":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("理货仓储","l_lhgs"));
		$('com_type2').options.add(new Option("货柜拖车","l_jzx"));
		$('com_type2').options.add(new Option("托盘垫木","l_tpgs"));
		$('com_type2').options.add(new Option("报关报验","l_bgh"));
		$('com_type2').options.add(new Option("出口代理","l_ckgs"));
		$('com_type2').options.add(new Option("进口代理","l_jkgs"));
		$('com_type2').options.add(new Option("私人物品","l_srwp"));
		$('com_type2').options.add(new Option("场站服务","l_czqy"));
		$('com_type2').options.add(new Option("货柜服务","l_hjgs"));
		break;
	case "other":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("国际空运","hkys"));
		$('com_type2').options.add(new Option("陆路运输","llys"));
		$('com_type2').options.add(new Option("特快专递","tkzd"));
		$('com_type2').options.add(new Option("铁路运输","tlys"));
		break;
	case "way":
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		$('com_type2').options.add(new Option("船舶行业","w_cbhy"));
		$('com_type2').options.add(new Option("货物保险","w_hwbx"));
		$('com_type2').options.add(new Option("商品检验","w_sj"));
		$('com_type2').options.add(new Option("国际金融","w_yh"));
		$('com_type2').options.add(new Option("海事服务","w_hsfw"));
		$('com_type2').options.add(new Option("港口码头","w_mt"));
		$('com_type2').options.add(new Option("物流科技","w_wlkj"));
		$('com_type2').options.add(new Option("机关团体","w_jg"));
		$('com_type2').options.add(new Option("其他","w_qt"));
		break;
	default	:
		del_com();
		$('com_type2').options.add(new Option("请选择",""));
		break;
	}
}

function del_com()
{
	$('com_type2').length = 0;
}