// JavaScript Document

//切换导航栏二级子栏目
function changeNav(n) {
	for(var i=1;i<=13;i++){
		document.getElementById("nav-sub-"+i).style.display="none";
	}
	document.getElementById("nav-sub-"+n).style.display="block";		
}

//提交&搜索
function search() {document.searchform.submit();}
function navsearch() {document.navsearchform.submit();}
function search_nd(ndvalue) { 
document.form_nd.nd.value=ndvalue;
    document.form_nd.submit();
}

function search_ztlm(ztlmvalue,ztlm) { 
    document.getElementById("ztlm").value=ztlmvalue;
	document.getElementById("ztlm").name=ztlm;
	document.getElementById("ztlm").id=ztlm;
	document.form_ztlm.submit();
}

function on(){
	ks = document.getElementById("query");
	if (ks.value == "请输入关键字") ks.value = "";
	return false;
}
function off(){
	ks = document.getElementById("query");
	if (ks.value == "") ks.value = "请输入关键字";
	return false;
}