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 menuFix() {
	var sfEls = document.getElementById("nav").getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		sfEls[i].onMouseDown=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		sfEls[i].onMouseUp=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		sfEls[i].onmouseout=function() {
		this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 
"");
		}
	}	
}
window.onload=menuFix;


function setnav(id){
    var obj_top=document.getElementById("top_"+id);
    if(obj_top.className="fl_1")
    {obj_top.className="fl_2";}
    else
    {obj_top.className="fl_1";}
    
    var obj=document.getElementById("class_"+id);
    if(obj.style.display=="none")
    {obj.style.display="block";}
    else
    {obj.style.display="none";}
}

function shownav(id){
    var obj_top=document.getElementById("top_"+id);
    if(obj_top.className=="prod_nr")
    {obj_top.className="prod_show";}
    else
    {obj_top.className="prod_nr";}
    
    var obj=document.getElementById("class_"+id);
    if(obj.style.display=="none")
    {obj.style.display="block";}
    else
    {obj.style.display="none";}
}


function searkey(strurl)
{
  var keys=document.getElementById("tb_keys");
  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;
  }
  var str="";
  var pclassId=document.getElementById("pclassId");
  if(pclassId.value!="0"){
    str="_"+pclassId.value;
  }
  
  window.location.href="/products"+str+".html?key="+keys.value;
}

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