// JavaScript Document
$(document).ready(function(){
						   
	/* 滑动/展开 */
	$("ul.expmenu li > div.header").click(function(){
												   
		var arrow = $(this).find("span.arrow");
	
		if(arrow.hasClass("up")){
			arrow.removeClass("up");
			arrow.addClass("down");
		}else if(arrow.hasClass("down")){
			arrow.removeClass("down");
			arrow.addClass("up");
		}
	
		$(this).parent().find("ul.menu").slideToggle();
		
	});
 $(".phone_nav").click(function(){
  $(".expmenu").toggle();

 })
});

<!--//
function ShowMenu(obj,n){
 var Nav = obj.parentNode;
 if(!Nav.id){
  var BName = Nav.getElementsByTagName("ol");
  var HName = Nav.getElementsByTagName("h2");
  var t = 2;
 }else{
  var BName = document.getElementById(Nav.id).getElementsByTagName("span");
  var HName = document.getElementById(Nav.id).getElementsByTagName(".header");
  var t = 1;
 }
 for(var i=0; i<HName.length;i++){
  HName[i].innerHTML = HName[i].innerHTML.replace("-","+");
  HName[i].className = "";
 }
 obj.className = "h" + t;
 for(var i=0; i<BName.length; i++){if(i!=n){BName[i].className = "no";}}
 if(BName[n].className == "no"){
  BName[n].className = "";
  obj.innerHTML = obj.innerHTML.replace("+","-");
 }else{
  BName[n].className = "no";
  obj.className = "";
  obj.innerHTML = obj.innerHTML.replace("-","+");
 }
}
//-->