//产品展台图片滚动
 marqueesHeight=136;
 stopscroll=false;
 with(icefable1)
 {
  style.width=0;
  style.height=marqueesHeight;
  style.overflowX="visible";
  style.overflowY="hidden";
  noWrap=true;
  onmouseover=new Function("stopscroll=true");
  onmouseout=new Function("stopscroll=false");
 }
 preTop=0;
 currentTop=marqueesHeight;
 stoptime=0;
 icefable1.innerHTML+=icefable1.innerHTML;

 function init_srolltext()
 {
  icefable1.scrollTop=0;
  setInterval("scrollUp()",1);
 }
 init_srolltext();
 
 function scrollUp()
 {
  if(stopscroll==true) return;
  currentTop+=1;
  if(currentTop==marqueesHeight+1)
  {
   stoptime+=1;
   currentTop-=1;
   if(stoptime==300) 
   {
    currentTop=0;
    stoptime=0;    
   }
  }
  else 
  {   
   preTop=icefable1.scrollTop;
   icefable1.scrollTop+=1;
   if(preTop==icefable1.scrollTop)
   {
    icefable1.scrollTop=marqueesHeight;
    icefable1.scrollTop+=1;   
   }
  }    
 }
 init_srolltext();
   
 //优质供应商滚动
  var speed=50
   demo2.innerHTML=demo1.innerHTML //克隆demo1为demo2 
   function Marquee(){ 
//当滚动至demo1与demo2交界时 
if(demo2.offsetTop-demo.scrollTop<=0)
demo.scrollTop-=demo1.offsetHeight //demo跳到最顶端 
else{ 
demo.scrollTop++ 
   } 
   } 
   var MyMar=setInterval(Marquee,speed)//设置定时器 
//鼠标移上时清除定时器达到滚动停止的目的 
   demo.onmouseover=function() {clearInterval(MyMar)} 
//鼠标移开时重设定时器 
   demo.onmouseout=function(){MyMar=setInterval(Marquee,speed)}   

//切换分类目录   
   /*第一种形式 第二种形式 更换显示样式*/
function setTab(m,n){
var tli=document.getElementById("menu"+m).getElementsByTagName("li");
var mli=document.getElementById("main"+m).getElementsByTagName("ul");
for(i=0;i<tli.length;i++){
   tli[i].className=i==n?"hover":"";
   mli[i].style.display=i==n?"block":"none";
}
}

//服务导航
var isIE,isIE5,isIE6,isIE7,isOpr,isMoz;
var agent=navigator.userAgent;
String.prototype.inc=function(s){return this.indexOf(s)>-1?true:false}
isOpr=agent.inc("Opera")
isIE=agent.inc("IE")&&!isOpr
isMoz=agent.inc("Mozilla")&&!isOpr&&!isIE
isIE6=agent.inc("MSIE 6")
isIE7=agent.inc("MSIE 7")

/* show top memnu */
var menu_init = false;
var hid_menu = function()
{
	//$("mymenu_0").style.display = "none";
	$("mymenu_1").style.display = "none";
	//$("mymenu_2").style.display = "none";
//	$("mymenu_3").style.display = "none";
//	$("mymenu_4").style.display = "none";
}
function show_top_menu(menu)
{
	hid_menu();
	if (!menu_init)
	{
		addEvent(document, "onclick", hid_menu)
		menu_init = true;
	}
	hidden(menu);
	stopEvent();
}

function addEvent(obj,eventName,eventFunc)
{
	if(obj.attachEvent)
	{
		obj.attachEvent(eventName,eventFunc);
	}
	else if(obj.addEventListener)
	{
		eventName = eventName.toString().replace(/on(.*)/i,'$1');
		obj.addEventListener(eventName,eventFunc,true);
	}
}

function hidden(obj)
{
	toggle(obj);
}

function toggle(d){
	d.style.display=d.style.display=="none"?"":"none";
}
var stopEvent = function() 
{
	var ev = getEvent();
	ev.cancelBubble = true;
	ev.returnValue = false;
};
if(isMoz) 
{
	stopEvent = function() 
	{
		var ev = getEvent();
		ev.preventDefault();
		ev.stopPropagation();
	};
}
function $(obj)
{
	return document.getElementById(obj);
}

function menu_top_over(n,type){
	if(type==1){
		$("mymenu_"+n+"_img").src="newimages/icon20_on.gif";
	}else{
		$("mymenu_"+n+"_img").src="newimages/icon20.gif";
	}
}
var getEvent = function () {
	return window.event;
};
if(isMoz){
	getEvent = function () {
		var o = arguments.callee.caller;
		var e;
		var n = 0;
		while(o != null && n < 40){
			e = o.arguments[0];
			if (e && (e.constructor == Event || e.constructor == MouseEvent)) {
				return e;
			}
			n ++;
			o = o.caller;
		}
		return e;
	};
}

//关键字搜索
function checkValue(){
	if(document.getElementById("keyword").value=="请输入关键字"){
		document.getElementById("keyword").value="";
	}
}
function checkValue1(){
	if(document.getElementById("keyword").value==""){
		document.getElementById("keyword").value="请输入关键字";
	}
}
//登录验证
function checkLogin(){
	if(document.getElementById("memAccount").value == ""){
		alert("用户名必须填写！");
		document.getElementById("memAccount").focus();
		return false;
	}
	if(document.getElementById("memPassword").value == ""){
		alert("密码必须填写！");
		document.getElementById("memPassword").focus();
		return false;
	}
	return true;
}
//服务导航下拉式菜单
function expl(obj,td)
{
	for(i=1;i<=8;i++)
	{
		if(document.getElementById("item"+i) !=null)
		{
		document.getElementById("item"+i).style.display='none';
		}
	}
	document.getElementById(obj).style.display='block';
	document.getElementById(obj).style.left=(document.getElementById("menu").offsetLeft+td.offsetLeft)+"px";
	//var ss=setTimeout("overTime('"+obj+"')",4000);
	
}
function overTime(obj)
{
	document.getElementById(obj).style.display='none';
}