var ifrm = new Array();
for(var ni = 2; ni <= 3; ni++) {
document.getElementById("tab" + ni).style.display="none";
}


var ifrmpause = false;
var curifrmid = 1;
var lastifrmid = 1;
var swIfrm = 1;
var opacityIfrm = 100;
var speed = 15;
var dpcount = 0; //add by wy
var dptime = 4; //add by wy
var ifrmdelay = (document.all)? 400:700;

function ifrmwitch(id, p)
{
	if(p)
	{
		ifrmpause = true;
		opacityIfrm = 100;
	}

	if(document.getElementById("toptab" + id).className == "topon") return;
	for(var ni = 1; ni <= 3; ni++)
	{
		var sy = "topoff";
		var Tdsy = "TdTabOff";
		if(id == ni)
		{
			sy = "topon";
			Tdsy = "TdTabOn";
		}
		document.getElementById("toptab" + ni).className = sy;
		document.getElementById("TdTab" + ni).className = Tdsy;
		document.getElementById("tab" + ni).style.display="none";
	}

	document.getElementById("tab" + id).style.display="";
	//document.getElementById("toptab" + lastifrmid).className = "topoff";
//	document.getElementById("toptab" + id).className = "topon";
	//curifrmid = lastifrmid = id;
}

function ScrollIfrm()
{
	if(ifrmpause && opacityIfrm >= 100) return;
    if(opacityIfrm == 100) dpcount++;
    if(dpcount==dptime){
        ifrmpause = true;
        opacityIfrm = 100;
    }

	if(swIfrm == 0)
	{
		opacityIfrm += 2;
		if(opacityIfrm > ifrmdelay){ opacityIfrm = 100; swIfrm = 1; }
	}
	if(swIfrm == 1)
	{
		opacityIfrm -= 3;
		if(opacityIfrm < 10){ opacityIfrm = 10; swIfrm = 3; }
	}
	if(swIfrm != 3) return;
	swIfrm = 0;
	curifrmid++;
	if(curifrmid > 3) curifrmid = 1;
	ifrmwitch(curifrmid, false);
}

function ifrmpause(s){ifrmpause = s;}

function StartIfrmScroll()
{
	setInterval(ScrollIfrm, speed);
}

function CheckIfrmLoad()
{
		clearInterval(checkifrmid);
		setTimeout(StartIfrmScroll, 2000);
}

var checkifrmid = setInterval(CheckIfrmLoad, 10);