var isIE = document.all?true:false;
function $(docId)
{
	return document.getElementById(docId);
}

String.prototype.trim=function()
{
	return this.replace(/(^\s*)|(\s*$)/g,"");
}

var currentMenuMark = 1;
function ChangeMenu(obj,type,mark)
{
	if(currentMenuMark!=mark)
		obj.style.background=type==0?"url(images/nav_back_hover.jpg)":"url(images/nav_back.jpg)";
}

function ClickToMenu(obj,mark)
{
	switch(mark)
	{
		case 1://首页
			document.location = "index.asp";
			break;
		case 2://公司背景
			document.location = "company.asp";
			break;
		case 3://公司快讯
			document.location = "news.asp";
			break;
		case 4://公司优势
			document.location = "comadvantage.asp";
			break;
		case 5://团队优势
			document.location = "teamadvantage.asp";
			break;
		case 6://视频说明
			document.location = "video.asp";
			break;
		case 7://奖励计划
			document.location = "plan.asp";
			break;
		case 8://商业特色
			document.location = "special.asp";
			break;
		case 9://合作加盟
			document.location = "cooperation.asp";
			break;
		case 10://成功论坛			
			document.location = "http://bbs.esd21.cc";
			break;
	}
}

function selCurrentMenu(mark)
{
	currentMenuMark = mark;
	$("menu"+mark).style.background = "url(images/nav_back_now.jpg)";
}

var currentListMark = "videoList";
function ShowList(mark)
{
	if(currentListMark != mark)
	{
		$(currentListMark).style.display = "none";
		currentListMark = mark;
		$(mark).style.display = "";
	}
}

//层向上不间断滚动特效（向上）
function initUpMarquee(mydiv,mypic1,mypic2)
{
	var Speed=50; 
	var timer; 
	var myDiv = document.getElementById(mydiv); 
	var pic2= document.getElementById(mypic2);
	pic2.innerHTML=document.getElementById(mypic1).innerHTML; 
	function picMarquee()
	{ 
		if(pic2.offsetHeight - myDiv.scrollTop <= 0)
		{ 
			myDiv.scrollTop = 0; 
		}
		else
		{ 
			myDiv.scrollTop++; 
		} 
	} 
	timer=setInterval(picMarquee,Speed);
	myDiv.onmouseover=function() 
	{ 
		clearInterval(timer); 
	} 
	myDiv.onmouseout=function() 
	{ 
		timer=setInterval(picMarquee,Speed); 
	} 
}