var NowImg1 = 1;
var bStart1 = 0;
var bStop1 =0;
var MaxImg1=4;
function fnToggle1() 
{
	var next1 = NowImg1 + 1;

	if(next1 == MaxImg1+1) 
	{
		NowImg1 = MaxImg1;
		next1 = 1;
	}
	if(bStop1!=1)
	{

		if(bStart1 == 0)
		{
			bStart1 = 1;		
			setTimeout('fnToggle1()', 2000);
			return;
		}
		else
		{
			

			document.images['DIV'+next1].style.display = "";
			document.images['DIV'+NowImg1].style.display = "none";
			document.images['dtgg'+next1].className = "downloadnum_img";
			document.images['dtgg'+NowImg1].className = "downloadnum_img1";  
			if(NowImg1 == MaxImg1) 
				NowImg1 = 1;
			else
				NowImg1++;
		}
		setTimeout('fnToggle1()', 2000);
	}
}


function toggleTo1(img)
{
	bStop1=1;
	if(img==1)
	{
			document.images['DIV1'].style.display = "";
			document.images['dtgg1'].className = "downloadnum_img";
			document.images['dtgg2'].className = "downloadnum_img1";
			document.images['dtgg3'].className = "downloadnum_img1";
			document.images['dtgg4'].className = "downloadnum_img1";
			document.images['DIV2'].style.display = "none"; 
			document.images['DIV3'].style.display = "none"; 
			document.images['DIV4'].style.display = "none"; 
	}
	else if(img==2)
	{
			document.images['DIV2'].style.display = "";
			document.images['dtgg1'].className = "downloadnum_img1";
			document.images['dtgg2'].className = "downloadnum_img";
			document.images['dtgg3'].className = "downloadnum_img1";
			document.images['dtgg4'].className = "downloadnum_img1";
			document.images['DIV1'].style.display = "none"; 
			document.images['DIV3'].style.display = "none"; 
			document.images['DIV4'].style.display = "none"; 
	}
	else if(img==3)
	{
			document.images['DIV3'].style.display = "";
			document.images['dtgg1'].className = "downloadnum_img1";
			document.images['dtgg2'].className = "downloadnum_img1";
			document.images['dtgg3'].className = "downloadnum_img";
			document.images['dtgg4'].className = "downloadnum_img1";
			document.images['DIV1'].style.display = "none"; 
			document.images['DIV2'].style.display = "none"; 
			document.images['DIV4'].style.display = "none"; 
	}
	else if(img==4)
	{
			document.images['DIV4'].style.display = "";
			document.images['dtgg1'].className = "downloadnum_img1";
			document.images['dtgg2'].className = "downloadnum_img1";
			document.images['dtgg3'].className = "downloadnum_img1";
			document.images['dtgg4'].className = "downloadnum_img";
			document.images['DIV1'].style.display = "none"; 
			document.images['DIV2'].style.display = "none"; 
			document.images['DIV3'].style.display = "none"; 
	}

}