var $_$ = function(id){
	return document.getElementById(id);
};
var $_$$ = function(o,e){
	return o.getElementsByTagName(e);
};
function Each(list, fun){
	for (var i = 0, len = list.length; i < len; i++) {fun(list[i], i); }
}

function showNews () {
	if($_$("classList"))
	{
		var class_li=$_$$($_$("classList"),"a")
		Each(class_li,function(obj,i){
			obj.onmouseover = function(){			
				for(var j=0; j<class_li.length; j++){
					class_li.item(j).className="in_news_tit_a1";
					$_$("newsList"+j).className="in_news_list dispnone";
				}
				obj.className="in_news_tit_a2";
				$_$("newsList"+i).className="in_news_list";
			}
		})
	}
}
showNews();


    function addCookie() {　 // 加入收藏夹
        if (document.all) {
            window.external.addFavorite(document.location.href,document.title);
        }
        else if (window.sidebar) {
            window.sidebar.addPanel(document.title,document.location.href,"")
        }
    }
    
    function setHomepage() {　 // 设置首页
        if (document.all) {
            document.body.style.behavior = 'url(#default#homepage)';
            document.body.setHomePage(document.location.href);
        }
        else if (window.sidebar) {
            if (window.netscape) {
                try {
                    netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                }
                catch (e) {
                    alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");
                }
            }
            var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
            prefs.setCharPref('browser.startup.homepage',document.location.href);
        }
    }


function searkey(obj_id)
{
  var keys=document.getElementById(obj_id);
  if(keys.value=="")
  {
    alert("请输入关键字!!");
    keys.focus();
    return false;
  }
  if(keys.value=="请输入关键字!!")
  {
    alert("请输入关键字!!");
    keys.focus();
    return false;
  }
  
  window.location.href="products.html?key="+keys.value;
}

  function focuskey(obj_id)
  {
    var key1=document.getElementById(obj_id);
    if(key1.value=="请输入关键字!!")
	 {
	   key1.value="";
	 }
  }
  
  function aler(obj_id)
  {
    var key1=document.getElementById(obj_id);
     if(key1.value=="")
	 {
	   key1.value="请输入关键字!!";
	 }
}



function list(nav){	
	var nav_li=$_$$($_$(nav),"li");	
	Each(nav_li,function(obj,i){
		var obj_dl=$_$$(obj,"dl");
		if((obj_dl.length > 0) && ($_$$(obj,"a").item(0).className != "menu_a2") ){
			obj.onmouseover=function(){				
				$_$("list_"+i).style.display="block";
			}
			obj.onmouseout=function(){
				
				$_$("list_"+i).style.display="none";
			}						
		}
	})
}

function show_nav(id){
    var obj=document.getElementById("nav2_"+id);
    if(obj.style.display=="none")
    {obj.style.display="block";}
    else
    {obj.style.display="none";}
}