<!--
var jx1=document.getElementById("jx1");
var jx2=document.getElementById("jx2");
var jx3=document.getElementById("jx3");
var jx4=document.getElementById("jx4");
//设置显示哪个层的变量
var sL=1;
//设置动与不动的变量
var iS=0;
//设定显示时间
function dansa()
{

	if(iS==0)
	{
		if(sL%4==1)
		{
			cs1(jx1,1);
			cs1(jx2,0);
			cs1(jx3,0);
			cs1(jx4,0);
			setTimeout('dansa()',8000);
		}
		else if(sL%3==1)
		{
			cs1(jx1,0);
			cs1(jx2,1);
			cs1(jx3,0);
			cs1(jx4,0);
			setTimeout('dansa()',8000);
		}
		else if(sL%2==1)
		{
			cs1(jx1,0);
			cs1(jx2,0);
			cs1(jx3,1);
			cs1(jx4,0);
			setTimeout('dansa()',8000);
		}
		else {
			cs1(jx1,0);
			cs1(jx2,0);
			cs1(jx3,0);
			cs1(jx4,1);
			setTimeout('dansa()',8000);
		}
		sL++;
	}
	else 
		{
         setTimeout('dansa()',0);
 		 }

}
//显示函数
function cs1(a,b)
{if(a==null)return;
 a.filters.revealTrans.apply();
 if(b==1) a.style.visibility="visible";
 else a.style.visibility="hidden";
 a.filters.revealTrans.play();}
//设定is变量
function s(v)
{iS=v;}

//-->