var indexa;
function show_01(dongxi)
{
	indexa=dongxi;
	if (dongxi == "kk1")
	{
	document.getElementById("kk1").style.display="";
	document.getElementById("kk2").style.display="none";
	document.getElementById("kk3").style.display="none";
	document.getElementById("kk4").style.display="none";
	document.getElementById("f1").className='sec1';
        document.getElementById("f2").className='sec2';
	document.getElementById("f3").className='sec2';
        document.getElementById("f4").className='sec2';
	}
	
	if (dongxi == "kk2")
	{
	document.getElementById("kk2").style.display="";
	document.getElementById("kk1").style.display="none";
	document.getElementById("kk3").style.display="none";
	document.getElementById("kk4").style.display="none";
	document.getElementById("f1").className='sec2';
        document.getElementById("f2").className='sec1';
	document.getElementById("f3").className='sec2';
        document.getElementById("f4").className='sec2';
	}	
	
	if (dongxi == "kk3")
	{
	document.getElementById("kk3").style.display="";
	document.getElementById("kk1").style.display="none";
	document.getElementById("kk2").style.display="none";
	document.getElementById("kk4").style.display="none";
	document.getElementById("f1").className='sec2';
        document.getElementById("f2").className='sec2';
	document.getElementById("f3").className='sec1';
        document.getElementById("f4").className='sec2';
	}
if (dongxi == "kk4")
	{
	document.getElementById("kk4").style.display="";
	document.getElementById("kk1").style.display="none";
	document.getElementById("kk2").style.display="none";
	document.getElementById("kk3").style.display="none";
	document.getElementById("f1").className='sec2';
        document.getElementById("f2").className='sec2';
	document.getElementById("f3").className='sec2';
        document.getElementById("f4").className='sec1';

	}

}
var i=1;
 
function addimage()
{

 
if(indexa=="kk1")
{
 
 i=2;
}
if(indexa=="kk2")
{
 
 i=3;
}
if(indexa=="kk3")
{
	 
 i=4;
}
if(indexa=="kk4")
{
	 
 i=1;
}
 if(i<=4)
 {
  show_01("kk"+i) 
 
  i++;
 }
  else
  {
   i=1;
     show_01("kk"+i) 
  }
 
} 
 window.setInterval("addimage()", 5000);